The snake is definitely a T positive. If it's a native from Kent, WA there's only one of three snakes it could be. T. ordinoides, T. sirtalis pickeringi or T. elegans vagrans. Scale counts should clear it up.

A T positive albino ordinoides has never been found (they've all been T negative) so it's not very likely a northwestern. An albino (of any type) T. sirtalis (concinnus or pickeringi) has never been confirmed in the northwest so it's also not likely a Puget sound garter. If it was, it would be the first albino ever found. However, numerous T positive wandering garters have been found so that's where I would put my money. It's probably a wandering. Again, scale counts and head scale shapes would tell you which of the three it is. They are all three different on their scaling but I'm betting on T. elegans vagrans since many T positive ones have been found.

I can't really tell from those pictures. The only head shots are too blurry and the ones that aren't blurry, cut off the head. If it's a T. ordinoides, you have the first and only T positive one ever found, that I'm aware of.

No matter what it is, it's spectacular and finding it goes way beyond lucky. You'd have better luck hitting a 2 inch target with a snub nose .38 from a mile away. Finding a single needle in an entire field full of haystacks perhaps? Well, you get the point. The odds aren't good at all.