I'm in the 'emerald green' camp - turquoise is too common, 90% of brides will wear that colour on their walima day.
Green's still traditional, but I think it'd be wonderful on a fair complexion - it'll look classy, and regal (have you chosen your shoes yet? make sure they're a bit high, at least three inches I'd say ... ).
Either way though - remember to thank Allah at the end of the day for all the blessings, and the dress colour won't matter as much.
( I know it's a bit stressful if you think about it too much - my saas-to-be is picking both my dresses, and even though I've told her my choice of colours I can't help but have momentary nightmares that the kaam on the dresses, or their design (or both!) will be hideous. )