For more elaborately decorated cupcakes, use paste food coloring (available in the cake-decorating department of crafts stores) to color your frosting. You can place the frosting in a pastry bag fitted with special pastry tips to pipe the frosting in swirls or other designs. For garnishes, try candies, chopped nuts, colored sugars, sprinkles, or crushed cookies. For inspiration, try our Champagne Wedding Cupcakes recipe.