preheat oven according to cake mix

mix cake mix as directed

separate cake mix into 3 bowls

add in the food color (one color per bowl)

mix batter and food color

place cupcake cups into muffin pan

drizzle one color at a time into wach cup until 2/3 full

bake as directed on the box

let cool completely before icing

after cupcakes are cool separate icing into 3 different bowls

add desired food color and mix

place icing into piping bag rotating from color to color. or you can just stick to white icing

add icing onto cupcakes

add sprinkles and enjoy