Having a graduation party for my son's HS graduation in a couple weeks. I am going to buy a decorated bakery cake for the main table but plan to start baking and freezing different flavors of cupcakes to serve on the table (on a pretty stand) instead of sheet cakes. I need a light, fluffy frosting that I can tint in different colors. Any good recipes that you all know of? Something that I can pipe on would be good.