Believe he is an adolescent Western Ribbon Snake, considered rather uncommon compared to most ribbon snakes, he shows many of the same colors, but also was very small and very young, which could show the color. but its pretty cute. Caught him long enough for pictures, and released him back in his home. he had just finished shedding from my guess as there were still bits of loose skin on him.
This is the stump with the snake hole in the base of it, seen many go in here last year. first one ive seen/caught this year