I want to make a checkerboard cake to take to a dinner next weekend and I was thinking that since it is July a red, white, & blue cake would be cool. Here is my question. The directions only tell you how to do a two color cake (for example a red & white checkerboard). Does anyone know how to make it three colors? How much batter would I need for each color (red & blue) & in what order would I pour them in the pans? TIA!