Jack-o'-Lantern Rice Krispies

Lightly coat a baking sheet with non-stick spray. In a small saucepan over medium heat, melt 2 tablespoons butter. Stir in green food coloring and 2 cups mini marshmallows. Cook until marshmallows are melted, then turn off heat and add 2 cups Rice Krispies, stirring until combined. Meanwhile, in another saucepan over medium heat, melt remaining 4 tablespoons butter. Stir in orange food coloring and remaining 4 cups marshmallows. Cook until marshmallows are melted, then turn off heat and add 4 cups Rice Krispies, stirring until combined. Using slightly dampened hands, press mixtures into pan, alternating to create three thin horizontal stripes of green and larger horizontal stripes of orange. Use a 2. 5" pumpkin cookie cutter to stamp out shapes. Make eyes with candy corn and mouths using melted chocolate.