Heat oven to 350 degrees F. Prepare cake mix according to package directions. Spoon 2 cups batter into a medium bowl, and tint pink with 2 drops red food coloring. Spoon 1/3 of white batter into an ungreased angel-food pan. Drop 3 large spoonfuls of pink batter onto the white. Cover with another 1/3 of white batter, then drop remaining spoonfuls of pink batter on top. Spoon remaining 1/3 of white batter into pan, then give a swirl through the batter with a spoon to marble the white and pink together. Bake and cool as directed on package. Transfer to a serving plate.

In bowl, combine frosting and tint light pink with a few drops of red food coloring. Frost cake using a small spatula, swirling frosting on cake with the tip of the spatula.