Color Picker for a 256-Color XTerm (xterm, konsole, iTerm). Here is a simple Perl script that prints out this lovely chart. It reminds me of my early years on my first 1982 IBM PC with the Color Card and Monitor. I am using these colors for tweaking vim colorscheme data.

perl -e ‘foreach $i (0..255) {printf(“\e[38;5;$i”.”m%03d\e[0m “,$i); }’