Bow in the Clouds Six Stack Cake

Coming out of the oven, the combined smell of each layers fruity flavors from will make you wonder if you've just created a dessert version of Fruit Loops. Fear not. Though the wild colors will appeal to even the tinsiest tasters, adults will adore the subtle fresh flavors of orange zest, lemon, lime and picked berries. As the host, you'll get far.too.many kicks from arriving at the table with a crisp, white-frosted cake then cutting into it to reveal a full spectrum of surprise!
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2 boxes white cake mix
6 eggs
1 c. water
2/3 c. oil
1/2 c. raspberries
Zest of 1 orange + 2 T. juice
Zest of 1 lemon + 2 T. juice
Zest of 1 lime + 2 T. juice
1/2 c. blueberries
1/2 c. blackberries
Wilton Icing colors in red, orange, yellow, green, blue and purple
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In a large bowl, combine cake mix, eggs, water, and oil together. Scoop 1 cup of batter into six small bowls. In the first bowl, mix raspberries and 1/4 tsp. red coloring. In the second bowl, mix orange zest and juice, and 1/2 tsp. orange coloring. In the third bowl, mix lemon zest and juice and 1/4 tsp. yellow coloring. In the fourth bowl, mix lime zest and juice and 1/4 tsp. green coloring. In the fifth bowl, mix blueberries and 1/4 tsp. blue coloring. In the sixth bowl, mix blackberries and 1/4 tsp. purple coloring.
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Prepare six 8 inch cake pans by greasing and flouring each generously. Using a spatula, spoon and spread each color of batter into its own cake pan. Bake in an oven, preheated to 350 degrees for 17-20 minutes, or until tops spring back when touched lightly. Allow to cool completely. Frost with White Chocolate Frosting.
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Billowed White Chocolate Frosting
You're going to want to lick the bowl, the spoon, the cake. Do try to restrain yourself.
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1 c. butter, softened
1 bag white chocolate chips
3 lbs. powdered sugar
1/2 to 1 full cup milk
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In a large bowl, microwave white chips until melted. Immediately beat in butter until smooth. Add remaining ingredients and beat with an electric mixer until light and fluffy. Makes enough frosting to ice between each layer of cake, and around the outside of the cake.