October Beach Wedding

I am having trouble picking a Fall color that will compliment the Beach. I am leaning towards say a Mocha for my bridesmaid dresses, however I am having trouble finding this color. I am also wondering what flowers would then go with this Fall, yet coastal affair? I personally love the sunflower and the gerbera daisy - but can they tie into Mocha/sand like colors and the beach? I appreciate anyone`s input and any sites you think I should check out. Thanks