SIXLETS RAINBOW CAKE

Have you heard of Sixlets?  They're like sprinkles, only bigger, and instead of solid candy they are a mixture of chocolate and carob wrapped in a candy shell.  A little like M&M candies but different, round.  They are sold by the pound in solid colors, metallics and color assortments.  I'm tellin' you,  it's a sprinkle lover's dream come true!  I stacked them high to the tippy-top of this cake for ultimate sprinkle-coverage!