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====== 256 Colors ======

Once upon a time, having a colored terminal displaying whole eight different
colors was subject to the geeks amongst all the terminal users. Nowadays,
this is nothing special anymore. Consequently, one has to go further: 256
colours!

===== rxvt-unicode =====

Compile with support for 256 colours (''--enable-256-color''), then make sure
''$TERM'' is set correctly:
<file yaml .Xresources>
URxvt.termName: rxvt-256color
</file>

===== Bash / Zsh =====

Clone dircolors-solarized.git:
<code>
# git clone https://github.com/seebi/dircolors-solarized.git
</code>
Copy one of the //dircolors.*// files to //~/.dir_colors// and add the
following to the shell's init script (if not already provided by the
distribution's global one:
<code bash>
eval $(dircolors -b ~/.dir_colors)
</code>

===== Vim =====

Just add the following to //~/.vimrc//:
<file vim .vimrc>
set t_Co=256
</file>

Optionally search for a nice colorscheme supporting 256 colors (default was
fine for me).

===== Screen =====

This depends on the value of ''$TERM'' at the time ''screen'' is started -
''rxvt-256color'' is fine. Or maybe not? In doubt, one may override it:

<file txt .screenrc>
term xterm-256color
</file>

===== Mutt =====

Compile with slang support (''--with-slang''). Maybe not necessary, but
certainly useful.

Mutt's colors are subject to customisation anyway, but here's a nice sample:
https://github.com/altercation/mutt-colors-solarized/blob/master/mutt-colors-solarized-dark-256.muttrc

===== Debugging / Testing =====

This script is useful:
<file bash 256-colors.sh>
#!/bin/bash
 
# This program is free software. It comes without any warranty, to
# the extent permitted by applicable law. You can redistribute it
# and/or modify it under the terms of the Do What The Fuck You Want
# To Public License, Version 2, as published by Sam Hocevar. See
# http://sam.zoy.org/wtfpl/COPYING for more details.
 
for fgbg in 38 48 ; do #Foreground/Background
	for color in {0..256} ; do #Colors
		#Display the color
		echo -en "\e[${fgbg};5;${color}m ${color}\t\e[0m"
		#Display 10 colors per lines
		if [ $((($color + 1) % 10)) == 0 ] ; then
			echo #New line
		fi
	done
	echo #New line
done

exit 0
</file>

This one is also nice, found on
[[https://gist.github.com/eliranmal/b373abbe1c21e991b394bdffb0c8a6cf|Github]] and
customized to get default parameter from tput output:

<file bash show-ansi-colors.sh>
#!/bin/bash

ncolors=${1:-$(tput colors)}

echo "showing $ncolors ansi colors:"
for ((n = 0; n < $ncolors; n++)); do
        printf " [$n] $(tput setaf $n)"
        printf "wMwMwMwMwMwMwMwMwMwMwMwMwMwMwMwMwMwMwMwMwMwMw"
        printf "$(tput sgr0)\n"
done
</file>