Talking about colorful ideas, how about surprising the birthday girl and all her friends with the perfect rainbow cake that only reveals itself when cut into. I'm not going to kid you, it's very hard work but if you have the patience, add a little food coloring to various batters and bake a number of different colored cakes. Then, all you need to do is stack them up on top of each other and cover your layered cake in frosting. See more party ideas and share yours at CatchMyparty.com