I've seen pictures of bp's that have shed and changed to some really strange colorations...usually a normal gold/brown coloration along their spine, and then a sharp change to an axanthic looking coloration along their sides. Typically, they stay that way for a while, and then shed back to normal. No one (that I know of) knows what causes it. It's pretty rare, but not unheard of. (I'll see if I can find a picture)


Usually, though, I think they just look "fresher" right after a shed. More a matter of perception than them actually changing colors.

So far as I know...any normal bp that sheds into another color is not a "genetic morph" but an anomoly that people are still trying to figure out.

EDIT: Couldn't find the pictures I was looking for. And I remembered something else to note. There is also the "IMG" ball...which stands for Increasing Melanin Gene. Supposedly with each shed, the snake gets darker, and again, so far as I know, it is a phenomenon that has not been proven genetic.