Gather all need supplies :food coloring
                                               2 white cake mixes
                                              5 egg whites
                                               2 1/2 cups of water
                                              2/3 cup oil
                                               flour
                                               shortening
                                               toothpick (op.)
                                               1 ea. white and choc. icing

                                             cake pans
                                             measuring cups
                                             mixing bowls
                                             bowls

Step 1: Prepare

Grease and flour pans (i prefer shortening to grease :D)
Preheat oven 350 F

Step 2: Mix

Ah i think i mentioned it in the title, but in case you didn't see it MIX :D

Step 3: Divide and Color

Divide in six bowls

I Did:
Red 10
Orange 5 Yellow +4 Red
Yellow 7
Green 7 (or 8 - i think one slipped in)
Blue 7
Purple 6 Red +4 Blue

Step 4: Bake

i would suggest baking the one you want on the bottom of your cake first, like i DIDN'T
then you can icing when the others are baking --i did white in between and chocolate on outside
15 min each