September Atlantica wedding

Hello Everyone! I need some advice! I'm getting married in early September at Atlantica, Westhampton. I need some help with colors! Since it's early september I don't know if I should go with lighter colors...related to summer...or more fall colors. Also, the colors inside atlantica are blue and white.(its located on the beach). I was to steer away from blues. Currently, I like the color scheme of sage, ivory and gold accents. Im nervous for my colors to look terrible with the preexisting decore of Atlantica. Please help! Thanks!