Short answers, pulled from the story.
Brown hair contains moderate levels of the dark pigment eumelanin. This substance separates it from blond hair which has far less eumelanin and from black hair which holds much more of the same pigment.
Medium to light brown shades dominate northern and central regions of Europe while darker shades prevail throughout the rest of European territory. These populations include people from Northwestern Europe, Central Europe, Southern Europe, and Eastern Europe.
The term brunette serves as the feminine form of the French word brunet which derives from brun meaning brown or brown-haired. All these terms ultimately trace back to the Proto-Indo-European root *bhrūn-.
Categories range from deepest brunette representing the darkest brown to light golden brown showing small signs of blondism. Other types include dark chestnut brown, milk chocolate brown, walnut brown, caramel brown, light ash brown, auburn brown, maple brown, mousy, and light golden brown.
Brunettes are commonly viewed as stable, serious, smart, and sophisticated according to media narratives such as those found in Allure magazine. This perception contrasts sharply with stereotypes surrounding blonde women who often face different assumptions despite lacking scientific basis regarding actual personality traits.