:Just looking over a few hog pics I had and I found this interesting individual from Central TX. I have actually found several in this area (Gillespie County) and they were all this sort of dark gray/light gray pattern. They don't seem to become completely melanistic but they don't show much yellow as adults either. Kind of pretty easterns, IMHO.
:The ugly white patch towards the tail is of course "hognose body paint" (i.e. uric acid).
The babies that I got from a normal male and a melanistic female (common here in N Fla.) run the entire course from high yellow to charcoal, and the colors and patterns change as the snakes mature.