Platinum is just another example of bad breeding. This is what leads to albinos, all these so called different whites. When they are bred, out comes the albino trait. There has been a few ads on some sites of white labs. From the description you gave of your pup, with red eyes and pigment it would be albino.
If lab breeders allow these dogs it turns out the same as the shepherd that some people are now breeding.They are against the standard, why breed them and propagate faults and weaknesses?
I think reputable breeders are right in culling whites in a litter, otherwise we would lose the standard for all dogs.