response: Well there are variations from almost black to light brown.
original_response: Nothing wrong with gray hair! It's distinguising. Brown hair can vary from light brown to almost black hair
history: My hair is brown, how about yours? No hair here, but your hair would be the second most common color for human hair, only behind black hair. Neat, do you know why people's browns are different? I thought brown was you know.. just brown.
knowledge: It varies from light brown to almost black hair.