Nothing unusual. Nothing so different to make you say WTF? All over their range you'll find both "dayglow lime", yellow, or almost white stripes. I can get all 3 from one pair and even a few 3 stripers, all in the same litter.

One more detail I thought I would share another hint: If one of the snakes from my snakes' location were to fall asleep on a raft and drift UPSTREAM for an hour or two he might wake up right where you found yours. I'm thinking SE hillsboro is where you found yours.

The deep red I'm referring to looks like this:




By contrast the notably hypoery's upstream from you look like this and dominate the population:


Neither the deep red or the second pic are what I would call typical. Yours is somewhere in between and not hard to find in that region of Oregon. I just thought it was very weird to find a spot where nearly all were hypoerys like this second pic. It's like, "OK, who the heck went and washed the colors in bleach?"