Follow directions to make your cupcake batter and divide into 3 bowls.
Add 1-2 drops in the first bowl to make the lightest batter
Add 3-4 drops in the second bowl
And Add 5-7 drops in the third bowl to make the darkest batter
Prepare your cupcake pan with liners.
Start with your darkest color batter for the bottom of the cupcake. Scoop about 1 tablespoon of the dark batter into each of the liners.
After each layer, use the back side of your spoon to smooth out the batter layer, making sure to spread the layer all the way to the edges of the liner.
Finish each layer working your way from dark to light.
Bake according to directions, then cool and frost.