I would go plain natrual soap, then dust with micas. I like natural better. But you can use paprika or tumeric or other things too to color soaps in a natural way. You can even add natural things like ground cucumber, and stuff like that to soaps to add color. I have even added real strawberries (purreed) to soap, it makes a beautiful pink. You don tneed to add a lot of it either. Just play around. note: I do HP soap, so my additives get cooked I do not know if that makes a difference or not since I have never done CP