I just like purple, and it was really cheap on eBay. I also have a red one and a brown one. Although I'm not really using them now that I've grown my regular (at this point in my life, it's black) hair out for the moment. I just like wigs-as-stimtoy and also as really easy way to regulate warmth without putting a hat on, and really easy way to have hair when I want it even when I want my head shaved for other reasons.
_________________
"In my world it's a place of patterns and feel. In my world it's a haven for what is real. It's my world, nobody can steal it, but people like me, we live in the shadows." -Donna Williams