Yes, those are the ones I am familiar with.
Back in the "old" days (over 10 years ago, don't remember exactly when), the strain was more inbred and many did show the greenish ring around the blotches. Now, Bill's staff told me (when we were getting info for the new book a year or so ago) that they have outcrossed the line extensively. So there is much more variation than earlier. If anyone wants to work with them, they will probably have to get several specimens, and then do some inbreeding to bring the line back to "breeding true" as far as the greenish ring goes. But the "hypo" part of the line does seem to breed true.