PREPARE cake batter and bake as directed on package for 24 cupcakes, adding dry drink mix and 1/2 cup chocolate chips to batter before spooning into prepared muffin pan cups.
COOL cupcakes in pans 10 min. Remove from pans to wire racks; cool completely.
REMOVE cupcakes from liners. Spoon frosting into medium bowl. Add COOL WHIP; whisk until blended. Stir in food coloring; spread onto cupcakes. Sprinkle with remaining chocolate chips.