Tinalala -- I don't have a Cricut, but I am betting you can make some really cool things combining its capabilities with your SU products.
I love the color coach. The other tool that might help you out is the Tuesday Color Challenge here on SCS. Best part of the CC is that you have all those examples. Sometimes I think "ick!" when I read a certain color challenge and then I see someone's posted card where the colors are balanced in such a way that I realize what a cool color combo after all.