Hair color as the main distinguishing feature
Imagine that when you went to school, there were six classes in your parallel. In "A" children studied tall above the average, with blue eyes and blond hair. In “B” - tall and blue -eyed, but dark -haired, in “B” - well, you understood the principle, and the last class “E” was for low -growing dark -haired and brown -eyed guys. Class "a" was considered the most privileged, and "e" - for those who are not lucky in life. It sounds wild, isn't it?