perl colorset

#!/usr/bin/perl
# Author: Todd Larason <jtl@molehill.org>
# $XFree86: xc/programs/xterm/vttests/256colors2.pl,v 1.2 2002/03/26 01:46:43 di
ckey Exp $

# use the resources for colors 0-15 - usually more-or-less a
# reproduction of the standard ANSI colors, but possibly more
# pleasing shades

# colors 16-231 are a 6x6x6 color cube
for ($red = 0; $red < 6; $red++) {
    for ($green = 0; $green < 6; $green++) {
        for ($blue = 0; $blue < 6; $blue++) {
            printf("\x1b]4;%d;rgb:%2.2x/%2.2x/%2.2x\x1b\\",
                   16 + ($red * 36) + ($green * 6) + $blue,
                   ($red ? ($red * 40 + 55) : 0),
                   ($green ? ($green * 40 + 55) : 0),
                   ($blue ? ($blue * 40 + 55) : 0));
        }
    }
}

# colors 232-255 are a grayscale ramp, intentionally leaving out