I wouldn't use this honestly. I don't get anything from it that I can't from manufacturers' sites. Every manufacturer has a "build your own car" link that has colors you can choose. Theirs often even let you choose interior colors too.

Manufacturers' sites suck, but this doesn't give me the info I need to skip them, so I'd now have to use two sites instead of one. This site is just a subset of the manufacturer site I'm already stuck using, and to be honest their color pickers work better.