Reference script for CLI color codes

I have been experimenting with adding more color to my bash prompts of late. I find it easier to read when the fields are in distinct colors. The problem I always have is remembering what those wonderfully obscure ANSI escape sequences represent. I always have to look at a table to remind myself that "light red" maps to "1;31".

In an interesting guide to configuring your bash prompt that I have been going through, there was a script listed that makes this much easier:

#!/bin/bash
#
#   This file echoes a bunch of color codes to the
#   terminal to demonstrate what's available.  Each
#   line is the color code of one forground color,
#   out of 17 (default + 16 escapes), followed by a
#   test use of that color on all nine background
#   colors (default + 8 escapes).
#

T='gYw'   # The test text

echo -e "\n                 40m     41m     42m     43m\
44m     45m     46m     47m";

for FGs in '    m' '   1m' '  30m' '1;30m' '  31m' '1;31m' '  32m' \
     '1;32m' '  33m' '1;33m' '  34m' '1;34m' '  35m' '1;35m' \
     '  36m' '1;36m' '  37m' '1;37m';
do FG=${FGs// /}
echo -en " $FGs \033[$FG  $T  "
for BG in 40m 41m 42m 43m 44m 45m 46m 47m;
do echo -en "$EINS \033[$FG\033[$BG  $T  \033[0m";
done
echo;
done
echo

This is from the Bash Prompt HOWTO, from a script by Daniel Crisman. It produces the following when run:

Just add an alias like alias colors="~/dir/of/handy/scripts/print_shell_colors.sh", and you can be reminded whenever you like.

I am still experimenting with my prompt colors, but differentiating the fields I find useful has made things a lot easier: