Navy, White & Yellow: my colors! although i would have the dresses be a deeper navy than the dresses in this pic.and i would have a bouquet that wasn't all white! maybe add some coral in there? :) I like that the shoes aren't yellow Callaway Hogan
Another mix and match grey bridesmaids dress option that we like is to play with textures. Let the girls choose their own grey dress from a selection of shades for the perfect shabby chic look (this works best with short dresses).