Bake the cupcakes according to the directions on the box and let them cool completely
With an electric mixer, mix the Crisco and milk on medium speed
Slowly add the powdered sugar
Once all of the powdered sugar is added, mix on high for 1-2 minutes. If needed: add additional milk or powdered sugar to achieve the consistency you’re looking for.
Divide the frosting into different bowls, depending on how many Kool-Aid flavors you are using.
Put 1/2 teaspoon of powder into each bowl. Use more or less to achieve the color and flavor intensity you want!
Use various spoons of a butter knife to add small amounts of the different colors to the tops
Gently smooth the frosting out and watch the rainbow appear!