response: Are you talking about the variations like light brown or almost black?
original_response: It can vary in shades of very light to almost black.  Mine is a lighter brown.  what is yours?
history: hello how are you? Okay, what color of hair do you have? If it is brown, it's the second most common after black! I have brown hair, it's pretty normal looking, unlike other variations I've seen.
knowledge: It varies from light brown to almost black hair.