I've been looking for new cupcake recipes to try, and I came across a recipe for orange cupcakes with gorgeous two-toned frosting. I'm still working on the frosting skills, but I think they turned out really pretty. The cake recipe itself was a little dry, but the frosting was delicious. It's the same buttercream that I usually make, but with orange juice and orange extract in place of milk and vanilla:
1 cup butter (substitute up to 1/2 cup shortening to keep frosting soft)
4 cups powdered sugar
2 Tbsp fresh orange juice
1 tsp orange extract
Beat together until fluffy and smooth.