Poll: Should I get black highlights?

I want "haute hair!". On the Paris trip, one goal is to get a dramatic hair color. Here's what I look like now - blond highlights on a brownish/reddish base that is my own:
black or blond highlights with layers
I was going for the Daphne Guinness look, but am not getting encouragement on it! Rick, my literal rock star hair stylist in Columbus advised me to go with Mocha #5 all over, and I'd like thick, like a 2" blond highlights. But the black could be cool and dramatic...

With black highlights, I would look like this (if I curled my hair)
daphne guinness black highlights