I am looking to get a new staffy pup and would like a blue kc registered. But in my reasurch I have seen that you shouldn't breed to dilutes (blue being a dilute of black) as this can lead to skin problems in the pups. But talking to some of the breeders they don't seem to have heard this before? And there seem to be loads of pups bread from two blues so am I worrieing about nothing??