I have seen a lot of Bogeys from NM to Mexico and I don't see any real color trends other than snakes from further south are more yellow and snakes from further north are more olive green (my favorite color phase).
Orange bogeys show up in a lot of different places. I have seen nice orange bogeys from the river road, from the Davis Mountains, from black gap but by far the nicest orange snake I have seen was one a friend of mine in El Paso found on the front porch of his apartment in El Paso one night. It was almost rossalleni orange. I don't know what happened to that snake.
Here are a few bogeys found at almost exactly the same stretch of road (within a few hundred yards) on the same night this summer -
an orangish male with broad bands

a typical RR bogey

and my favorite - tan/green with clean pattern -

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Chris Harrison
San Antonio, Texas