One of my friends did that with one of her characters as well XD two of her characters are identical twins with light coloured hair so one of them dyed her hair brown so they could be differentiated quickly and easily by people who didn't know them XD
What game are you playing and can you set those kinds of stats for your characters in game or is that something you've done outside of the game?
It's a thing people started doing outside the game, since the Main Character has neither definitive gender or looks decided. The game's narrative allows the players' imagination run wild.