Christmas Reindeer Cupcakes
Instead of brown-colored icing for the reindeer cupcakes, use chocolate buttercream icing, which will be naturally brown.
You could color the frosting any color, such as red, blue, or green, and then use white ready-rolled fondant icing to cut out Christmas-inspired shapes to stick on top of the cupcakes. Try stars, Christmas trees, holly leaves, etc. Silver dragees also make a festive addition to sprinkle on top.