Nicki Minaj: 'Every Time I Change My Hair It's a High'
Kevin Mazur/WireImage
Nicki Minaj has tried almost every color of the rainbow on her head -- from pink and purple to green and everything in between -- but she doesn't do it for shock value. As it turns out, she has a bit of an addiction.
"I get tired of things quickly," Minaj, who recently released her first fragrance, Pink Friday…
