Do we know that people like Courtney cox aren't naturally dark? It seems to be a consistent shade, I imagine she must dye it now though being older and all.
I'm half Turkish and look totally English except for my hair which is so dark brown it looks black.
Hairdressers fall over themselves to tell me I'm dyeing it the wrong colour and that it's too dark for my olive/pale skin.
I get comments like "that shade makes you look unhealthy/like a ghost/like a goth" 
I just laugh (and cry inside
)
Just sayin'