My god daughter wanted a "rock star" themed cake with black, white and purple. She told me, "I'm really into hearts and guitars, right now. I don't know why." So this is what I came up with...a two tiered cake with black flames coming up the bottom. She loved it and her friends went wide. Not one slice was left. I do warn that black icing and a children can end up a bit messy. Lesson learned...but they had a blast!