This isn't necessarily related to polymer clay, but you could apply it to clay.
ColourLovers.com, a website I've mentioned a few times before as one good place to find color schemes (or generate your own), now has a pattern feature. You can choose from a number of patterns (everything from flowers to plaid) and select the colors you'd like for different elements of the design.
Just be aware that it's addictive:
Here's another cool feature that I just now noticed: If you find a palette (or pattern-- or just a single color) that you lovelovelove, you can easily select it for your desktop background. Just look for "Get This Pattern Image"-- or "Palette Image" or "Color Image", depending on what you're looking at-- to the right of the pattern, palette or color. What a great way to remind yourself of a great palette that you want to incorporate into your next project!
Hope everyone's had a wonderful weekend! :o)