Here you will find links to the color swatches for the following programs:

the linked threads will provide you with all the neccesary instructions.

Gimp: http://forum.toribash.com/showthread.php?t=174003
Compiled by: diealready

Illustrator: http://forum.toribash.com/showthread.php?t=133386
Compiled by: borgpunx

Paint.net: http://forum.toribash.com/showthread.php?t=190172
Compiled by: rem0ved

Universal: http://forum.toribash.com/showthread.php?t=59798
Compiled by: joonveen & jusmi

~BenD