There is absolutely no truth to this. Your puppy has the same genes for good health as the parents had if that's what they were bred for.
I had a 'white' one too, he did indeed get darker with age.
The only thing wrong with white labs are the breeders who market them as rare or more worthwhile. They are just light yellow labradors.
I have several Ridgeback breeder friends and I can say that the ridgeless puppies can still exhibit a dermoid sinus, also that they rarely cull any puppies anylonger, but puppies born with dermoid sinus are routinely euthanized, ridge or no ridge.
