I love using the rainbow cakes and even though they can be a supreme hassle they are so vivid and effective. I have recently been hooked on the Neon Tag cake rocking out some really fun kitty cat, unicorn and butterfly designs. The girls love them, of course, and lean towards that color palette every time. I load the back of my sponge and roll the colors on.....then apply lots of pink glitter!!!!! Sparkles are the icing on the "split cake"!!!!