"Someone who dyes their hair", then

Jessica Simpson has changed the hue of her hair. This might be the sort of thing most people do with barely a murmur, but for Jessica, it's something deeper:

"I'm happy to be a brunette because it reflects who I am now."

Yes. As a person with brown hair, having brown hair really does reflect you as a person who has brown hair.

Spooky, isn't it?