0_Apprentice
I have brown hair.
1_Wizard
It has a categorized as higher levels of the dark pigment eumelanin and lower levels of the pale pigment pheomelanin
0_Apprentice
I wonder why brown or darker color hairs are more common than blond or red hair.
1_Wizard
blond" is first documented in English in 1481 and derives from Old French "blund, blont", meaning "a colour midway between golden 
0_Apprentice
So records show that blond hair didn't exist before? Do you think it's possible for new hair colors to naturally start existing then?
1_Wizard
Yes. Do you know that People with brown hair are often referred to as brunette, 
0_Apprentice
Yes, I wonder if there's a name for people with black hair since we have brunettes, redheads, and blonds.
1_Wizard
There may be.  in French is the feminine form of "brunet," the diminutive of "brun" (brown, brown-haired or dark-haired).