Our Happy Birthday Letter Pick Candles spell out the greeting and light the cake at the same time. Thirteen letter candles form HAPPY BIRTHDAY in red, blue, green, yellow, orange and purple, each molded onto a wooden pick that pushes cleanly into frosting without cracking the surface. Line them across a sheet cake, arch them over a layer cake, or split them between a cake and a tray of cupcakes. Bright primary colors work for any age and any theme.