I forgot to mention tatoos and body pearcings are both red flags for me too. Everytime she tries to call she'll get the v-mail and no return call. And then I'll press the delete button.
No purple, pink, yellow ect hair either. All red flags.
Fake hair? Definite yellow flag, but after I got home and had time to dwell on it, it would turn into a red flag.
I once dated a girl and we went back to her place, once we got there she took her pony tail off. I looked at her, then I looked at the pony tail.
I had to cut her a loose. She tried to call, and I never returned her call, and then I would avoid her when I would see her on campus.