A standard vanilla cupcake can be transformed into something not-so-standard thanks to a little creativity, some sprinkles, and frosting in a few different colors. These particular ones have a spring theme that starts with green tinted buttercream frosting. A colorful flower (purple, blue, pink – your choice) made of royal icing is added to the top. Next, add on the sprinkles! The ones that you see here are colorful sugar sprinkles, but you can use whichever ones you choose.
Source Java Cupcake