Tan Groomsmen Tuxedos With Brown Or Blue Dresses???

I will be getting married the middle of this November in Florida. The wedding will be in a church, however, we are having photos taken on the beach as well. My fiance wants to wear a tan suit/tuxedo and I am having alot of trouble deciding between chocolate brown or blue dresses. HELP!! It is so hard for me to visualize and I am having trouble finding wedding photos of wedding parties who have done something similar. Blue feels more beachy to me, but I think that my bridesmaids would appreciate if I chose brown so that they could wear the dress again. I will have 7 bridesmaids and I feel like the wedding may end up being very drab. If I choose brown, I would have to brighten things up with flowers. Eventhough the wedding is in Fall, I don`t think I want to use orange or other Fall colors for the flowers. Any suggestions???? If I go with blue, I will probably use white flowers or brown to tie in the vests of the groomsmen. If you have any advice, pictures to view, or know of a website that has someting similar I would REALLY appreciate it. Thanks!!!!