Not that I'm aware of - I think there is some of that in blue-eyed whites, but I don't know enough about rabbit breeding to know how that came about.

They are a bit on the lardy side and could use a bit more exercise. Since they were developed as a meat breed they tend to pack on the pounds, and they "puddle" a bit when they lie down. Some of that is genetics - someone on one of my rabbit groups has a Cally in Sancturary that she described as "a hopping basketball" - but also they have been mostly caged or penned for a long time. So hopefully with a slightly-restricted diet and lots of room to run and explore they will drop a bit of the pudge and be healthier long-term.