Melt the butter over medium low heat in a non-stick pan.
Add the marshmallows to the butter mixture and stir constantly until melted.
In a large mixing bowl, pour marshmallow mixture over popcorn and begin to combine with a wooden spoon.
Quickly add Skittles to the mixture and combine well.
Spray your hands with non-stick cooking spray and form the mixture into 4-inch balls.
Set aside for about an hour then enjoy!