Rainbow Cake! (Yellow Cake Base)

Preheat oven to 350 degrees F (175 degrees C). Grease and flour two 8-inch round pans. Sift together the flour, baking powder and salt. Set aside.

In a large bowl, cream together the butter and sugar until light and fluffy. Beat in the egg yolks one at a time, then stir in the vanilla. Beat in the flour mixture alternately with the milk, mixing just until incorporated. Separate into 6 different bowls, and add color gels into the batter. Remember a little goes a long way, but make them as BOLD (add a lot) as you want!

Now comes the fun part. Using a measuring cup or disher, place scoops of each colored batter randomly into prepared pans. If you would like a marbled effect, swirl the colored batter together with a toothpick before placing into the oven.

Bake in the preheated oven for 25 to 30 minutes, or until tops spring back when lightly tapped. Cool 15 minutes before turning out onto cooling racks.