Could you do this technique with two different colors of batter (tinted with food coloring) instead of chocolate? I'm seeing pink and purple little girls birthday cakes. Would you need to add anything to one of the colors? I bet you could use gel coloring on a plain batter to make any colors you choose. The 'net has many recipes for rainbow cakes, which work in the same way for colored layers. Let us know if you give it a try. ~ MaryJane

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