I've seen quite a few people asking about which colour scheme they should paint their miniatures recently, so I thought'd I'd share this link.
Adobe Kuler
It's a great little flash app that might be familiar to the designers/developers out there. Once it's loaded, click on the 'create' menu item to get started. One thing that really stands out is the different colour matching modes you can use, it's great for people without any understanding of colour theory and will help you create a colour scheme that sits well together.
You could be really clever and print out your theme to take to a colour matching service. Haven't been able to find any that do high quality acrylic colour matching, but I'm sure they're out there.