I thnk the hard part about that project is the fact that over time, melanin starts building up, especially in the back half of the snake. The reason the candycane project worked is because the only "creeping" color was yellow, and that took only a few months to start showing. This project would require keeping all the best looking snakes until they were full adults and finding the best of the best to try to breed so the melanin doesn't build up as much. Unfortunately, I think that the saddles for these snakes would suffer a little as well and only be brown instead of the deep black. Not completely sure of this, so I would ask serp about it.