520 lines
24 KiB
Plaintext
520 lines
24 KiB
Plaintext
*xterm16* An adjustable contrast color scheme for GUI & Terminals.
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DESCRIPTION *xterm16.vim*
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An adjustable contrast fully customizable color scheme for GUI & 8, 16 or
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256 color terminals, designed to minimize eyestrain. The main features
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are:
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- Four color maps:
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'allblue' : A colormap with most foreground colors blueish (to
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minimize contrast etc.)
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'soft' : A colormap with foreground colors of similar
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intensities to reduce eyestrain.
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'softlight' : A colormap with a bright background (for web
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hosting etc.)
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'standard' : A colormap for use on terminals with only 8/16
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colors.
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The first three colormaps will work only on 256 color capable
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terminals or the GUI. The last one will work anywhere.
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- Adjustable brightness / contrast. Lets you easily adjust the
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brightness and contrast settings. Extremely useful (for instance)
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when there is a glare on your monitor, or for long late dim light
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dim light late at night :)
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- Terminal and GUI support. If you use xterm, rxvt or mrxvt (compiled
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with 256 colors), then the colors on your terminal will be almost
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identical to your GUI colors. On any other terminal emulator, a few
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scripts (included) and parts of this help are designed to help you
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get the colors you want.
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- LCD / CRT Monitor support. The color response of LCD and CRT
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monitors is pretty different. This color scheme has an option to
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adjust colors on CRT monitors to give a similar appearance.
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- Customizable colors. If you find any color unreadable or ugly, you
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can change it easily. When adjusting the brightness, your custom
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colors will be suitably adjusted too!
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- Customizable highlighting groups. If you don't like the highlighting
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of any particular group, you can change it to suit your needs. This
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is useful for instance if you want the cursor to be brighter than
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everything else / etc.
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INSTALLATION *xterm16-installation*
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For local installation, put the |xterm16.vim| file in your ~/.vim/colors
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directory. To install globally put it in $VIMRUNTIME/colors. Finally add
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the following lines to your {.vimrc}: >
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" Select colormap: 'soft', 'softlight', 'standard' or 'allblue'
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let xterm16_colormap = 'allblue'
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" Select brightness: 'low', 'med', 'high', 'default' or custom levels.
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let xterm16_brightness = 'default'
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colo xterm16
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< You might also want to put |xterm16.txt| in the help directory (~/.vim/doc
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or $VIMRUNTIME/doc).
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OPTIONS *xterm16-options*
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Colormap, brightness and contrast options: ~
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|xterm16_brightness| : Set the brightness / contrast
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|xterm16_colormap| : Select the colormap (standard / soft)
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|:Brightness| : Adjust the brightness / contrast and or colormap
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Customizing colors or highlighting: ~
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|xterm16_custom_color| : Customize some (or all) colors.
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|xterm16_custom_group| : Customize some (or all) highlighting groups.
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|xterm16_CRTColors| : Setup defaults for CRT monitors.
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|xterm16_NoHtmlColors| : Disable remapping of html colors.
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|xterm16_example| : An example of these options :)
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Adjusting colors on terminals: ~
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|xterm16_trmcolors| : A short HOWTO to help you get the same colors on
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the terminal and GUI.
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Options controlling colors on terminals: ~
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|xterm16_termtype| : Select the terminal emulator (xterm, rxvt)
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|xterm16_ccube| : Specify the color cube of the terminal.
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|xterm16_NoRemap| : Disable dark blue remapping on 8 color terminals
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|xterm16_TermRegexp| : Regexp of terminals where darkblue is unreadable
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PACKAGE CONTENTS *xterm16_filelist*
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|changelog.txt| : List of changes
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|cpalette.pl| : Perl script to help you set colors in rxvt/xterm etc
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|xterm16.ct| : Help change colors on Linux console.
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|xterm16.schema| : Help change colors on KDE's terminal (Konsole).
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|xterm16.txt| : This help file
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|xterm16.vim| : Actual color scheme script
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------------------------------------------------------------------------------
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ADJUSTING THE BRIGHTNESS OR CONTRAST *xterm16_brightness*
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The brightness and contrast are controlled by the global variable
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|xterm16_brightness|. This color scheme uses three different color
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intensities: {low}, {medium} and {high}. These intensities are used
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differently in each of the colormaps. See the |xterm16_colormap| section
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for an explanation of how these intensities are used.
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The brightness / contrast can be controlled by changing these intensities.
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You can do this by setting the global variable |xterm16_brightness|, using
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any of the following formats: >
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let xterm16_brightness = '#llmmhh'
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let xterm16_brightness = 'lmh'
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let xterm16_brightness = 'low|default|med|high'
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< In the first format, 'll' 'mm' and 'hh' are the intensities (2 digit hex)
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of the {low}, {medium} and {high} levels respectively. In the second
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format 'l', 'm' and 'h' are numbers from 0 - 5 specifying the respective
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intensities. This corresponds to the levels in the 6x6x6 color cube used
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by a 256 color terminals. The final format selects either a low, medium or
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high brightness respectively. These are different depending on the
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colormap you are using. In the 'allblue' colormap they are '123'
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(#5f87af), '234' (#87afd7) and '345' (#afd7ff) respectively.
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*:Brightness*
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You can change the brightness (and optionally the colormap) by using the
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command >
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:Brightness <brightness> [colormap]
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< This is convenient if you want to try out / temporarily change the
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brightness or colormap. Once you find a brightness / colormap you like,
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set the global variables |xterm16_brightness| and |xterm16_colormap| in
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your {.vimrc}.
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CHANGING THE COLORMAP *xterm16_colormap*
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This color scheme comes with four different color maps: 'standard',
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'soft', 'softlight' and 'allblue'. My preference is to use 'allblue' by
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default, 'softlight' when there is a glare on my screen, and 'standard'
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when I use a terminal with only 8/16 colors (e.g. when I ssh using Putty).
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You can select your colormap by setting the global variable
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|xterm16_colormap|. The default is to use the 'allblue' colormap if
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possible (in GUI or a terminal supporting 256 colors) and the 'standard'
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colormap otherwise.
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The 'standard' colormap uses 8 standard colors (of {medium} intensity),
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and the same colors of {high} intensity. Dark grey is of {low} intensity.
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The 'soft' colormap is designed so that all foreground colors appear to be
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of similar intensity (to reduce the strain on your eyes). We do this as
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follows: The {low} intensity is used for background colors. Some colors
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(like green for instance) appear a lot brighter than other colors (like
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blue). So we use the {medium} intensity for greenish colors and the {high}
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intensity for blueish colors. See |xterm16_brightness| for how to adjust
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these intensities to your taste.
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The 'softlight' colormap is designed to be readable on a bright
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background. It uses {low}, {medium} and {high} intensities in the same way
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as the 'soft' colormap. The {low} levels still represent backgrounds, so
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you might want to set it to some high number. For example, setting {low}
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to 4, {medium} to 1 and {high} to 2 in the 'softlight' colormap produces
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reasonable results.
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Finally the 'allblue' colormap is designed to that almost all colors are
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blueish. I have found this to be least strain on the eyes, while still
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being able to tell apart different syntax elements. In this colormap the
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{low} is again used for background color levels. The {medium} is the
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lowest (non-zero) intensity you want foreground colors, and {high} is the
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highest intensity you want foreground colors. For example setting the
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{low}, {medium} and {high} levels to 1, 1 and 3 produces reasonable (dark)
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results.
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NOTE: By default this color scheme is designed for LCD monitors. If you
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have a CRT monitor, see |xterm16_CRTColors| for how to adjust the colors
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to suit CRT monitors.
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NOTE: On terminals WITHOUT 256 colors, you can only use the 'standard'
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colormap. The reason for this is because the 'soft', and 'allblue' color
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maps have a few unreadable dark colors (used as backgrounds), and possibly
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use more than 16 colors in total. If you change your terminal palette to
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that of the 'soft' or 'allblue' colormap, then you'll have trouble reading
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text in non-Vim applications. If you want to use the 'soft' or 'allblue'
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colormaps (as I recommend), either use a terminal supporting 256 colors
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(xterm, rxvt, mrxvt), or modify the source :)
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------------------------------------------------------------------------------
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CUSTOMIZING COLORS *xterm16_custom_color*
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Different monitors show colors differently. All colors of this color
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scheme are readable on my monitor. However if you have trouble with some
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colors, you can change them by setting the variable |xterm16_colorname|.
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The color names used are different on each colormap. The 'standard'
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colormap uses the colors: >
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none black darkred darkgreen darkyellow darkblue darkmagenta darkcyan
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grey darkgrey red green yellow blue magenta cyan white
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< The 'soft' and 'softlight' colormaps use the colors: >
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black darkred darkyellow darkcyan darkblue darkgrey grey lightgrey red
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lightbrown yellow green bluegreen skyblue magenta cyan purple white
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< The 'allblue' colormap uses the colors: >
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black darkred darkcyan darkblue grey1 grey2 grey3 grey4 grey5 grey
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white1 red lightbrown yellow dirtygreen green bluegreen yellowgreen
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skyblue lightblue lightcyan darkpurple purple lightpurple
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< (I know this looks like a lot of colors for a colormap that calls itself
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'allblue'. The point is that the colors that usually show up in regular
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text / code are all shades of blue (except "Type" and "Special", which are
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shades of green). So most code will look pretty much blueish. But error
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messages and other vim niceties will be in other colors.)
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The format of this variable is one of >
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let xterm16_blue = '#rrggbb'
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let xterm16_blue = 'nnn'
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let xterm16_blue = 'Ldddddd'
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< The first format specifies the red / green / blue intensities in two digit
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hex. The second format specifies the red / green / blue intensities as a
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level between 0-5 number. (This is like specifying the color in a 6x6x6
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RGB cube, as used by a 256 color terminals).
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Finally the most useful format is the 'Ldddddd'. Here 'L' is the intensity
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level (either 'l', 'm' or 'h' for low medium or high respectively). The
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first two digits 'dd' are HALF the percentage intensity of the red
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intensity. The second two, green and last two blue. So for instance
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'm005035' corresponds to a color with no red component, a green component
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equal to the 'medium' intensity level, and a blue component that is 70% of
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the 'medium' intensity level.
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The advantage is that when you change the brightness / contrast, this
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color will change accordingly. See |xterm16_example| for an example.
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NOTE: If you set the variable |xterm16_CRTColors| then some of your
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default colors will be overridden. If you want to use your custom colors,
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and the CRT settings, first set |xterm16_CRTColors| and load this color
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scheme. The global variables 'xterm16_colorname' will be set for all
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modified colors. Now unset |xterm16_CRTColors|, copy these colors into
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your vimrc, and modify any other color you like as desired.
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CUSTOMIZING HIGHLIGHTING GROUPS *xterm16_custom_group*
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If you don't like a few highlighting groups, you can change them by
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setting the variables *xterm16fg_GroupName* *xterm16bg_GroupName* and / or
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*xterm16attr_GroupName* . These variables control the foreground color,
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background color and GUI/cterm attributes of {GroupName} respectively.
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{GroupName} is the name of the group whose highlighting you want to
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change. For a list of group names see |highlight-groups| and |group-name|.
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The format of these variables is the same as the format for colors. In
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addition you can also use a named color from the colormap. See
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|xterm16_custom_color| above. As an example: >
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let xterm16bg_Cursor = '#00ff00' " Make cursor bright green
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CRT MONITORS *xterm16_CRTColors*
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By default the colors in this color scheme are designed for LCD monitors.
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If you have a CRT monitor, set the vim variable |xterm16_CRTColors| in
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your .vimrc. This will adjust the colors to suit CRT monitors. With an
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unspecified brightness and 'standard' colormap, this will produce exactly
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the same colors as the original version of xterm16. If the colors still
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look unreadable and you want to change them, read the section on
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|xterm16_custom_color|.
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NOTE: Setting this variable will override some (maybe all) of your
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customized colors. See the note at the end of |xterm16_custom_color|.
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NOTE: Setting this variable will have no effect under the 'allblue'
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colormap. This colormap does not look too different under CRT monitors.
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Also modifications will probably render a few shades of blue used by this
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colormap indistinguishable.
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HTML HIGHLIGHTING GROUPS *xterm16_NoHtmlColors*
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Html groups use cterm attributes (which SUCK), so we change them here. The
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GUI attributes are OK, and are unchanged. If you do not want your precious
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html groups touched, set the variable |xterm16_NoHtmlColors| in your
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{.vimrc}
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If html colors don't work correctly, set the variable |html_no_rendering|
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*xterm16_example*
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As an example, the following will produce exactly the same colors as the
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original version of xterm16: >
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let g:xterm16_colormap = 'standard'
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let g:xterm16_brightness = '#80cdff'
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let g:xterm16_darkblue = 'h000050'
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let g:xterm16_blue = 'h002550'
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let g:xterm16_grey = 'm474747'
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< NOTE: This is done by default if you set the variable |xterm16_CRTColors|,
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and use a terminal with less than 256 colors (or use the 'standard'
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colormap).
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------------------------------------------------------------------------------
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ADJUSTING COLORS ON TERMINALS *xterm16_trmcolors*
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Depending on which terminal emulator you use, you might have to tweak the
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settings a little to get good results on your terminal emulator. On 256
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color capable terminals, you might have to make vim aware that your
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terminal has 256 colors. On terminals that are only capable of using 16
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colors, you will have to adjust the palette.
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If you use recent versions of xterm, rxvt or mrxvt, or your terminal
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emulator claims to support 256 colors, then read the help topic
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|xterm16-256cterm|. If not, read the help topic |xterm16-16cterm|.
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*xterm16-256cterm*
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Terminals which support 256 colors: ~
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Some terminal emulators like xterm, rxvt and mrxvt support 256 colors if
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compiled in. A simple way to check if 256 colors are supported in your
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terminal is to type the following the bash prompt: >
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$ echo -e "\e[38;5;196mred\e[38;5;46mgreen\e[38;5;21mblue\e[0m"
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< If you see the words red, green and blue in the correct colors, then
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you've got 256 colors. If not, I recommend compiling 256 color support in
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(use --enable-256-colors at compile time for xterm / mrxvt). If this is
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not possible, try looking under |xterm16-16cterm|.
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Once you know your terminal is 256 color capable, check to see if Vim is
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aware of this. Start up vim in your terminal emulator and type >
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:echo &t_Co
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< If vim reports "256", then you need not make any modifications. If vim
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reports 8 or 16, then add the following code snippet to your {.vimrc}: >
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au VimEnter *
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\ if &term == 'xterm' |
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\ set t_Co=256 |
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\ endif
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< Replace 'xterm' above with the value of $TERM.
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NOTE: You can also fix this by modifying the terminfo files on your
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system. See the man pages of terminfo, infocmp and tic.
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NOTE: rxvt users will need to set the variable |xterm16_termtype| and or
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|xterm16_ccube| to get colors which are identical to those on the GUI.
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NOTE: If in addition you want to adjust the default colors of your
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terminal (for consistency with other applications) read the section on
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|xterm16-modcolors|.
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*xterm16-transparent*
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Finally, if you use a terminal that supports pseudo transparency (like
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mrxvt), and want your vim to appear transparent use: >
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if $DISPLAY != '' && !has('gui_running') && $MRXVT_TABTITLE != ''
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let xterm16bg_Normal = 'none'
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endif
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< This might not work on 16 color terms, but you're welcome to try :). This
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definitely works on mrxvt versions 0.4.1 or later.
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*xterm16-16cterm*
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Terminals with only 8 or 16 color support: ~
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If your terminal emulator does not support 256 colors, you will have to
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manually modify the terminal palette to obtain the colors in this color
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scheme. NOTE: You can only use the 'standard' colormap in such terminals.
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See the section on |xterm16_colormap| for details.
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First I suggest attempting to at least get 16 colors (and not settle for
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only 8 colors). This looks a little nicer than using bold fonts. Read the
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section on in the vim help under |xfree-xterm|, and hope that works.
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*xterm16-modcolors*
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Now to modify your terminal colors, the first thing you need to do is to
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figure out the colors this color scheme is using. To do this, load this
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color scheme in gvim, and adjust the brightness / contrast to your taste.
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Don't forget to use the 'standard' colormap. Now the global variable
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|xterm16_palette| contains all the colors that are currently being used.
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If you use xterm, or some fork of rxvt (like mrxvt, aterm, wterm etc),
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follow the instructions in |xterm16-xdefaults|. For konsole or
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gnome-terminal see |xterm16-konsole| and |xterm16-gnome-terminal|
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respectively. Finally for the Linux console, see |xterm16-ctheme|.
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*xterm16-xdefaults*
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For xterm or some fork of rxvt, do the following: Once the colors are
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adjusted to your taste, edit the file ~/.Xdefaults or ~/.Xresources (or
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~/.mrxvtrc for mrxvt). Paste in the contents of the vim variable
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|xterm16_palette| (use <C-R>=xterm16_palette for instance). Now filter
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those lines through the supplied perl script *cpalette.pl* by typing >
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:'<,'>!perl -w /path/to/cpalette.pl -x --class trmname
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< where trmname is the resource class of your terminal. Generally this is
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the same as the terminal name. For xterm use "xterm.vt100" as the class,
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and for mrxvt use "Mrxvt" as the class. (|cpalette.pl| can do a few other
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things. Type "cpalette.pl -h" for options).
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If your terminal gets it's resources via the X window system [using
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XGetDefaults()], then you have to merge the above file with your current
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resource using >
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$ xrdb -merge ~/.Xresources
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< If your terminal directly reads the resource file, then just restart the
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terminal and you should be fine :). See the terminal version / man file to
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figure out if you need to merge your resources or not.
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*xterm16-konsole*
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For konsole, the file *xterm16.schema* contains the colors of this color
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scheme with 'standard' colormap, default brightness and CRTColors. If you
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use a different colormap / brightness, get the palette from the variable
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|xterm16_palette|, and modify the file appropriately. You'll need to
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convert the palette from to decimal. The following few lines might help: >
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" Brightness 134 (high), colormap standard
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let palette = '#000000 #af0000 #00af00 #afaf00 #0000af #af00af #00afaf #9a9a9a #5f5f5f #d70000 #00d700 #d7d700 #0000d7 #d700d7 #00d7d7 #d7d7d7'
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let i = 0
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while i < 16
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echo 'Color' i '0x'.strpart(palette,i*8+1,2)+0 ' '
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\ '0x'.strpart(palette,i*8+3,2)+0 ' '
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\ '0x'.strpart(palette,i*8+5,2)+0
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let i = i + 1
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endwhile
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< To change the default colors on Konsole, add the file |xterm16.schema| to
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~/.kde/share/apps/konsole. Select the "Xterm 16 Colors" schema from the
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schema menu.
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*xterm16-gnome-terminal*
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For gnome-terminal you can change the colors by running gconf-editor and
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selecting the apps - gnome-terminal - profiles - Default menu, and change
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|
the palette option to the string (all in one line!) >
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|
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|
#000000:#af0000:#00af00:#afaf00:#0000af:#af00af:#00afaf:#9a9a9a:#5f5f5f:#d70000:#00d700:#d7d700:#0000d7:#d700d7:#00d7d7:#d7d7d7
|
|
|
|
< If you changed the brightness / colormap, you might want to replace the
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|
above line with your current colormap (obtained from the variable
|
|
|xterm16_palette|).
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|
|
|
*xterm16-ctheme*
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ctheme can be used to change the colors on your Linux console (neat huh?).
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|
Find more information about it at >
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|
|
|
http://www.sourceforge.net/projects/ctheme/
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|
|
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< The file *xterm16.ct* contains the colors of this color scheme with
|
|
'standard' colormap, default brightness and CRTColors. If you use a
|
|
different colormap / brightness, get the palette from the variable
|
|
|xterm16_palette|, and modify the file appropriately.
|
|
|
|
If necessary, change the first line of |xterm16.ct| to point to the
|
|
correct location of ctheme, then run it with your ctheme. Thanks to
|
|
Juhapekka Tolvanen <juhtolv@iki.fi> (http://iki.fi/juhtolv) for providing
|
|
this theme, and informing me of the existence of ctheme!
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|
|
|
------------------------------------------------------------------------------
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COLOR SCHEME PALETTE *xterm16_palette*
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|
|
|
The global variable |xterm16_palette| contains the 16 color palette
|
|
currently used by the color scheme. This is mainly so that you can easily
|
|
obtain the palette, and use it to change the colors on your favourite
|
|
terminal emulator.
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|
|
|
CHANGING THE TERMINAL COLOR CUBE *xterm16_termtype* *xterm16_ccube*
|
|
|
|
The terminals that support 256 colors all have a 6x6x6 RGB color cube
|
|
between the colors 16 to 231. Unfortunately, not all of them have the same
|
|
color cube. Rxvt uses a uniform RGB color cube, but xterm and mrxvt do
|
|
not.
|
|
|
|
This color scheme tries to guess which terminal you're using, and use the
|
|
appropriate color cube. The guessing is done as follows:
|
|
|
|
1. If the environment variable MRXVT_TABTITLE is defined, then we
|
|
assume you're using mrxvt.
|
|
2. Otherwise, if your TERM variable is set to something beginning with
|
|
"rxvt", then we assume you're using rxvt.
|
|
3. Otherwise we assume you're using xterm.
|
|
|
|
If the above will lead to an incorrect guess, set the vim variable
|
|
|xterm16_termtype| to the terminal emulator you're using (currently only
|
|
'rxvt' and 'xterm' are supported).
|
|
|
|
If you use a different terminal with 256 colors, then you can get the
|
|
colors right by setting the variable |xterm16_ccube|. The value of
|
|
|xterm16_ccube| should be a 12 digit hex number (without the leading 0x).
|
|
The first two digits are the intensity of the term level 0 (generally this
|
|
is 00). The next two are the intensity of the term level 1, etc. The last
|
|
two correspond to the level 5. (Remember the terminal colors are a 6x6x6
|
|
RGB cube).
|
|
|
|
You will probably have to read the source of your terminal emulator to
|
|
figure out the intensities of the colors in the 6x6x6 color cube. However,
|
|
if your terminal supports setting colors 16 - 231 using .Xdefaults or
|
|
something, then you can use the supplied perl script |cpalette.pl| to
|
|
generate a color cube of your choice. For example: >
|
|
|
|
perl -w cpalette.pl --class xterm --ccube 002a557faad4 -g >> ~/.Xdefaults
|
|
|
|
< will make the xterm color cube the same as the rxvt color cube.
|
|
|
|
UNREADABLE CONSOLE COLORS *xterm16_NoRemap* *xterm16_TermRegexp*
|
|
|
|
On a Linux console (and some other 8 color terminals), the dark blue
|
|
(PreProc) is unreadable so we remap it. To disable this feature, set the
|
|
variable |xterm16_NoRemap| in your {.vimrc}
|
|
|
|
If this color gives you trouble on other terminals, and you want it
|
|
changed elsewhere too set the variable |xterm16_TermRegexp| to a regexp
|
|
matching all troublesome terminals.
|
|
|
|
NOTE: This is only true in the 'standard' colormap. The 'soft' colormap
|
|
does not use dark blue as a foreground, and hence no remapping is done.
|
|
|
|
------------------------------------------------------------------------------
|
|
>
|
|
Maintainer : Gautam Iyer <gautamATmathDOTuchicagoDOTedu>
|
|
Modified : Thu 18 May 2006 04:28:25 PM CDT
|
|
vim: ft=help:tw=78:iskeyword=!-~,^*,^|,^":ai:
|