Habitat appears to be a very strong factor in reptile coloration & banding. Even from county to county, marking can vary, as you know.
Also, note that kings on each coast tend to be black & white, and banded. The more interior you go, the more variation you get with color & pattern, and the more likely a solid color will predominate. (And why are black specimens only found in KY in pine forests, and in Mexico in the Sonoran Desert??)
Also, note that with Cal Kings, coastal specimens are light brown & black, usually banded. Desert species are stark black & white, rarely striped. San Diego area produces about 33% striped specimens - go figure!
I'm continually fascinated by coloration & patterns of reptiles, especially snakes.
Don, age 45
Network Technician
Vancouver, WA