Preheat oven to 350°F (175°C). Prepare the cake mix according to package instructions, adding eggs, melted butter, and water.

Divide the batter into multiple bowls and mix in different food colors for a rainbow effect.

Layer the colored batters in a greased baking pan and swirl gently with a toothpick.

Bake for 25-30 minutes or until a toothpick comes out clean. Let cool completely before crumbling into fine pieces.

Mix crumbled cake with frosting until it holds together; roll into 1-inch balls.

Dip each ball halfway in melted chocolate, decorate with sprinkles, insert lollipop sticks, and chill for about an hour until set.