So I made the rainbow cupcakes. I didn't actually do the recipe that used the sprite and cake mix, although that is something I will be trying. I don't have any Sprite in my house today so I just used, my Alison's Pantry Creme Cake Mix. This was so easy, and I thought it would be time consuming. HA!! I am in love with this idea. I think this will be our new birthday cake at our house, because it really is cool to look at. What a fun new tradition! The kids thought it was great fun and loved it.