In a large saucepan, melt the butter and marshmallows.

Remove from heat, and stir in vanilla.

Stir in Rice Krispies until they are well coated with marshmallow mixture.

Split into 3 bowls (approx 2 cups per bowl).

In one bowl, add yellow food coloring and stir until desired color is reached.

In the second bowl, add orange food coloring and stir until desired color is reached.

Grease a bread pan. Press un-colored treats into an even layer on the bottom. Repeat with yellow, then orange.

Allow to set for 5 minutes.

Loosen treats with a knife, then turn pan over to remove treats.

Cut and serve!