how to make a rainbow cake!

The Omnomicon: how to make a rainbow cake!: "People seemed to miss the point that I am a 25-year-old woman on a diet with no kids. Since kids don't really need fat-free anything, there's no need to make it a soda cake, and if you don't like dye, don't make this for dinner for them every night for a month. Okay, folks, thanks for the allowance to disclaim.]"