So adorable, yes?
And while I'm making rainbow cupcakes on the outside... you know (from my mosaic this morning) the inside has to look like this:
ooh or even prettier like this:
So I'm thinking I just need to get 1 thing of the 4 colors of food coloring, and white or cream cheese (yes please) frosting and white box cake. I'm pretty sure this is what the 'rainbow' is made of: