It will be interesting to see how this complex is marketed as they become more common and more crosses are done and it gets harder and harder to sort things out. Say you bred a lesser\\phantom X butter\\Vin Russo. We don't know for sure yet but I bet all four possible combos of the babies (lesser\\butter, lesser\\Vin Russo, phantom\\butter, phantom\\Vin Russo) would be white and look a lot alike (maybe not the best example if lesser and butter are the same). Already I see ads for just "leucistic" and I guess you are left to ask about the parentage. Would make some difference though as I'd love to have a shot at one with phantom even if it would take the right pairing to find out. If you could identify a pair with phantom in it those white snakes could produce the 25% homozygous phantom that isn't white in the next generation.