My son also wanted to make the rainbow cupcakes from Family Fun magazine, discovered via Pinterest. I found them to be fairly time consuming and difficult to make. It was hard to figure out how much batter of each color to put in. I ended up putting too much at first and ended up with jumbo cupcakes. Some I did only one color, and dyed the frosting green to make more traditional St. Patty's cupcakes. I am, however, getting better at frosting them with a frosting bag.
