I'm cooking now!
Mix a few drops of your favorite classic McCormick® Assorted Food Colors or McCormick® Assorted Neon! Food Colors into the cake batter or frosting -- or both! (Keep in mind that if you start with a yellow cake mix, any color you add to it will be yellow plus the color you are adding. For instance, if you add blue food color to a yellow cake mix, you'll get a green cake!)