Bake brownies. Prepare batter following recipe directions. Spray mold with vegetable spray. Spoon batter into prepared molds 2/3 full. Bake 22-25 minutes. Cool completely in mold. Push from back to release brownies and remove from mold.
Tint icing. Prepare icing and tint ½ cup each yellow, orange, teal and violet. Combine Golden Yellow and Lemon Yellow for yellow shown. Combine Orange and a touch of Lemon Yellow for orange shown.
Decorate brownies. Use spatula and colored icings to ice tops of brownies, leave stems naked. Position eyeball candy decorations. Use black tube icing with tip 2 to pipe mouths.