If they don't want their own color, then why do so many of them tell buyers that AKC will recognize the silver color soon? That is not going to happen. Between the parent club, who's guidelines AKC sticks to, and AKC calling them chocolate (which was an admitted error, but once done was done), it's a done deal that silver will not ever be an option on registration papers. Yet the "breeders" continue to spread this misinformation.
As for the color, while it may well be that it can crop up within purebred Labs, I also used to live close to the original source of the controversy, and there was most certainly at least one Weimaraner there...which mysteriously disappeared around the time AKC came to do their inspection. So....while some may well be crop-outs from purebred lines, not all are. Plus, knowing the person and their reputation, I wouldn't believe a word that they said. And having seen a multitude of the dogs they produced in that area, most looked far more like Weims than Labs, in head, eye color, ears, and body.