AA candies are not true candies and do not give the same results as a urethane candy. Urethane candies are dye based which allows them to be completely transparent (i.e. with enough layers, they will appear almost black). Waterbased candy technology is still limited to a pigment base. The AA candies can give some cool effects, but they are not even close when compared to their urethane counterparts. A few very light layers works ok... beyond that, the pigment takes over and begins covering the layers underneath.