Melt candy. Melt Light Cocoa Candy Melts candy according to package instructions.
Prepare decorating bag with melted candy. Cut small tip in bag. Pipe 3 x 3 in. trees (24 needed for 24 cupcakes) on parchment paper-covered cake board. Immediately sprinkle with green, orange, yellow and red nonpareils. Chill until set, about 10 to 15 minutes.