Preheat your oven to 350 degrees and line 2 cupcake pans with cupcake liners.
Prepare your cake mix by mixing together the cake mix, oil and eggs as directed on the box.
Scoop out the batter into your cupcake liners, filling each cup ½ way full.
Bake for 15 minutes and let cool.
Scoop the yellow frosting into a decorating bag with a star tip at the bottom.
Frost each cupcake from the center working your way out.
Top with skittles for spots.