I found (read: Simon found) this AMAZING site that lets you build colour palettes and browse ones other people have made based on tags – like ‘ice cream’ – you can sign up for free www.colourlovers.com
You can also create patterns based on your palette like this:
This isn’t great I know but I’ll have more of a play later. I’m going to use it to create the palette for my custom theme on this blog. Any suggestions more than welcome!