Odd looking normal

I encountered this cornsnake on the side of my house about a year ago. I thought that it was interesting that his pattern faded out from a fairly bright classic pattern in the front part of his body to more of the grey phase of cornsnake. The fading is reminiscent of a pine or bull snake. I've been looking around at various morph lists and haven't really found anything like this snake; has this coloration been bred for?

As for the snake himself, I recall it being a little cool, so he was quite easy to work with. I suspect he was on the brick for heat and didn't seem to mind borrowing mine during a picture session. To the best of my knowledge, there is no legal way to collect native reptiles in my state, and we can't keep wild-type natives anyway, so he was returned to the yard after the pictures.