Yes... and no. There are three color morphs of Puget Sound garters that I'm aware of. The dark (brownish) body with yellow stripes is the most common wild variety. A similar morph has a single red stripe down it's back and yellow stripes on each side. This is the next most common wild variety. The blue morph is probably the least common wild variety, but their beauty makes them fairly popular in the pet trade. Rossman doesn't even talk about their coloration (except for their ground color), probably because of this variety.