Lightly butter a large baking sheet. (12 x 17) Set aside.

For each color use: 3 tablespoons butter, 3 cups mini marshmallows, and 3 cups rice krispie cereal.

For each color: Melt 3 tablespoons butter in a medium saucepan. Add 3 cups mini marshmallows, stirring until completely melted. Remove from heat, add a few drops of gel food coloring, until you reach desired color, stirring constantly. Stir in 3 cups rice krispie cereal, stirring until cereal is completely coated.

Pour mixture into prepared pan. Press mixture firmly into pan, in a row, with a buttered spatula, using only a quarter of the pan. (All four colors of krispie treats will fill the pan.)

Repeat until all colors are used and pan has 4 rows of colored rice krispie mixture.

Set aside for 15 minutes. Using a leaf shaped cookie cutter, cut out as many leaves as possible.

(I got 3 leaves of each color, 12 leaves total.)

You can easily combine the remaining rice krispie scraps and cut out several multi-colored leaves.