teenagers are cruel and often feel insecure with themselves, so they pick on anyone who they view as "different." I'm sorry that happened. I myself was picked on because I was a very chubby teen, so I know what it's liked to have others look down on your just because your apperance is different.
vaginas do come in all different shapes, there is no "normal." One look at the Titty board on here can confirm that all women are shaped differently and the coloring is often different on each woman as well.
I often felt self conscious because my labia is darker in color than the very light pink vagina's that I had seen in a few playboy magazines. Shortly after I got into porn (I am bi after all lol) and realized that every woman is different and it's all beautiful.
just be proud of yourself and know you're a beautiful woman inside and out. respect yourself as a unique individual.
sp