Hi, I am doing mostly black and white. Everything will be black and white , except my bridesmaid dresses will be lipstick red. My personal opinion is that I think black and white looks very formal which is sometimes hard to achieve at a destination wedding. Often there are guys in khaki shorts or khaki colors ( not that there is anything wrong with that ) but I just prefer the formal black and white look. I am keeping the linens white with perhaps some black and white engagment photos on our tables for centrepieces in black frames. I think it's your wedding, and you should pick what YOU want, its your vision and it's your wedding pictures that you will be looking at years from now, not your sister . Good luck. P.s you could always do black and white and perhaps maybe make it pop by adding some tropical flowers in the mix .