usually break down into two groups, banded or un-banded. The gound colors vary, some pops are tan, others greenish. Some, such as those in the Verde Valley can vary from white to tan or yellow. I Az. it is rare to find both banded and unbanded in the same locality. The main variable in any locality, whether banded or un-banded is the orange or red stripe. The snakes can totally lack a stripe(what most describe as plain) have a pencil thin stripe, medium stripe, or the stripe can be so wide as to make the whole snake appear to be orange or red. This is the case with the snake you have pictured.