What you will need:
1 White Cake Mix
1 White Cake Mix
1 Can Clear Diet Soda (12 oz.)
Gel Food Coloring
Mix cake & diet soda together. Seperate into 5-6 different bowls, depending on how many colors you want (I forgot about purple). 
Drop spoonfuls of each color into cupcake tins or cake pan. DO NOT MIX! Just drop one on top of the other.
Give baby another cookie so she will stop crying & let you finish your project.
Bake @ 350' (cupcakes not baby)
Let COOL & admire how COOL they look!
FROSTING: I used a small container of fat free coolwhip & a small package of vanilla pudding. Add a little FF milk if it's too lumpy. This pretty much makes the entire cupcake FAT FREE!!
Now, let your cute assistant frost his own cupcake.
ENJOY!
