Men are one of the Children of Eru Illuvatar, and the ruling race during the Fourth Age.
See RP Rank for when you can join these factions.
Hair depended on the environment for men, as well as age. Hair for the most part turned peppered, grey, or white for older humans
Harad/Far East: Black Hair
Rohan: Varied, primarily blond or tan
Gondor: Varied, primarily black or brown
Dale:Varied, primarily black
Skin also varied for humans. They, for many peoples (except Druedain) are various shades of brown.