Hi, I am new to this sight but I am hoping to get some information from some Yorkie enthusiasts! My family and I are looking at a little of 1 day old Yorkie puppies. 4 females and 1 male. They are all gorgeous but two of the females are very light silver and the rest are the black Dobie look. While they are adorable I am wondering if they will change color when older? Has anyone seen this? Any info is appreciated.