Different presentations are expected in different places and situations. We've already been told that in the San Francisco tech startup world you can forget about landing a job if you come to the interview wearing a suit. Right qualifications, wrong pose. Kind of ridiculous if true, which I don't doubt it is in some cases.
Funny, but every generation believes that they have discovered true self-expression, but it always really means conformity to a new norm. In the end, it's just fashion, folks. Nothing to get too excited about, but nothing to defend like it's important somehow either.
I didn't say Dougherty's hair color was noteworthy. More like mildly joke-worthy. But it's okay. If I ever met her I would not stare at her hair, let alone laugh. It's a personal choice, and I respect that. But it's still a pose, one that tells me a little more about the person than perhaps they wanted me to know. If they don't mind, neither do I.