I’ve been playing with Adobe’s Flash based color pallet generator - Kuler. It requires the latest version of Flash so you might want to go to Flash.com and pick it up. I’m as color blind as one can be (which is why I go for this black on white blog theme) so I usually ask some of my graphic designer friends for color theme suggestions. I also like that you can browse other people’s color themes to get some idea’s of your own. For both web design and cartography I can see using this.