Line 24 standard (2-1/2-inch) muffin pan cups with paper liners or spray with nonstick cooking spray. Prepare and bake cake mix in prepared muffin cups according to package directions. Cool in pans on wire racks 15 minutes. Remove cupcakes to racks; cool completely.

Add food coloring to frosting, a few drops at a time, until desired color is reached. Frost cooled cupcakes with tinted frosting.

Cut each marshmallow crosswise into 4 pieces with scissors. Stretch pieces into petal shapes; place 5 pieces on each cupcake to form flower. Place candy in center of each flower.