Line a loaf pan with parchment paper and lightly spray with non stick spray.
In a medium saucepan, melt 1 tbsp butter over low heat. Then add 1/3 of the marshmallows and enough red food coloring to make it your desired shade of red.d
Add 1/3 of the Rice Krispies cereal and stir until cereal is well coated.
Press the mixture into your pan with buttered hands.
Repeat the process with one more tablespoon of butter and marshmallows only.Then add cereal.
Press this mixture on top of the red layer.
Melt the remaining butter and marshmallows. Stir in blue food coloring until it reaches your desired shade of blue.
Stir in cereal and press into the pan on top of the white layer.
Insert Popsicle sticks at equal distances.
Cool completely before cutting into individual pops.