[cvd]

This is great. By the way, do you (or anyone else) know of a good tutorial/guide for creating color combinations that go well together?

UPDATE: One thing that would be nice is to be able to drop a pre-existing color theme in and then tweak it with the color picker.

[msg]

I have a soft spot in my heart for this one.

http://colors.napcsweb.com/colorschemer/

There are several schemes to choose from (complimentary, contrasting, triadic, etc) and knobs to adjust. You get 5 colors to look at next to each other and 18 along the same lines that go together. The input is in HSV/RGB and every output color comes in hex.

[dmnd]

http://kuler.adobe.com/#create/fromacolor is a pretty nice resource for creating and finding pleasing colour schemes.