According to the international FCI standard, golden retrievers are divided into nine colors, from milky white, milky white, off-white to slightly golden, golden, dark golden, to light brown, dark brown and reddish brown. As long as the golden retriever is not in the above colors, it will be disqualified. However, golden retrievers are allowed to have uneven color. In addition to avoiding prominent black hair, the hair of golden retrievers will become lighter and lighter as they age.