Oh dear. I hope you are not blundering into the same mistakes that 'Meetup' made when they redesigned their website. It went from a simple useful working interface into a flashy, all bells and whistles, latest fad, gee whizz web app that no one understood or could use effectively.
This is what happens when you let web developers loose with their shiny new toys, who try to be trendy and clever. The result is an interface that only the developers who coded it know how to use. Stop trying to be Apple and concentrate on what members want from the site; not what you think they should want in terms of garish colours and dinky unusable features.