Once the plain cupcake batter is prepared, spoon it equally into five plastic cups.

Colour the batter in each cup with the food colouring. I used pink, orange, purple, blue and green.
But, really, anything goes.

For christmas, maybe use green and red and brown.

For independence day, blue and red.

Once all your batter is coloured, pop the cupcake liners into the moulds. Then, using a spoon, scoop one layer of of green batter into each liner. Keep in mind the first colour you scoop will be at the bottom of the cupcake.

Continue layering until you have used up all your coloured batter

Pop into the oven and bake as per normal. Don't worry if the cupcake batter is uneven before you bake it, it will even out in the oven.