1. Melt half of the butter (¼ cup) in large sauce pan over low heat. Add 4 cups of marshmallows and stir until melted and well-blended. Cook 2 minutes longer, stirring constantly. Remove from heat.

2. Add several drops of green food coloring, mix.

3. Add 5 cups cereal. Stir until well coated.

4. Using buttered spatula or waxed paper, press mixture evenly and firmly in buttered 13 x 9 inch pan.

5. Repeat steps 1-3, using blue food coloring.

6. Press blue rice crispy layer flat on top of the green layer. Press firmly.

7. Press candy eyes into treats in random spots.

8. Cool, cut, and serve.