I think the only you can do is dye the hair to the color you want
The white hairs you find are common in all black labs, if you look closely you will find many white hairs. This is more common as the dog ages. In yellow labs you will find black hairs, if they can have both a yellow mother, and a black father, or a black mother, and a yellow father. Any color lab will produce black and yellow puppies. So it is only normal they have a few hairs of the other color. another reason is based on their ancestry. so ... to basically sum it up for you yes it is common
Blue roan.
No, it just appears that way. White hairs are easier to see on black and black hairs are easier to see on white.
Alleles for both the red hairs and white hairs are used. This is a typical pattern of the codominance
Black,Grey,White and others might be orange
Dew= Dark Eyed White. Main color is white sometimes may have black guard hairs & black or dark colored eyes. Sometimes called a BEW.. black eyed white.
Overall raccoons are a gray color. However they also have a few reddish hairs in places as well as black and white markings
White, black, grey, red-brown, and brown, but are usually grey with black and brown hairs on their backes and heads and tails. Sometimes they are pure white or black, but sometimes have all these colors combined.
No, no horse breed is known to have blue hair anywhere on its body. However, there is a horse color known as a Blue Roan in which a black colored horse roans to a bluish color. The hairs themselves are not blue, they are actually black, but when mixed with a large number of white hairs, the human eye sees the color from a distance as blue.
No foodstuff will turn white hair black.
normal penguins are black and white
Roan is a horse color; it means that there are white hairs mixed in with whatever colored hair the horse has, so it is a paler, or silvery version of some other color such as brown or black.