Rainbow Cake! Make a white cake like normal, divide it into six equal portions (or more,my mom has done it with nine) add gell or solid food coloring (not the liquid kind) and pour each color in one at a time, if you carefully spread out each layr, or use small ans, you can get a more even dispersal, but either way it looks cool and kids love it!
2 white cake mixes = 8 layers. Bake @350- 15 minutes, 4 at a time fit. It took A LOT of frosting= 5 cubes of butter, 3# sugar, etc. But you really can't get away with less or your layers show through the sides. I decorated with fruit loops around the bottom edge. We cut slices really thin because the cake ends up so tall. Served a lot of people, easily 20. Loved this a lot.