We're having a fairly formal wedding in August and our colors are purple and aqua. From what I've gathered: my FH will wear a vest that goes with my dress, the groomsmen will wear vests that match the bridesmaids dresses (lapis from David's) and the fathers will have black vests. So this leaves me with the ushers (my brother and a close family friend)Do they need tuxes too? What color should their vests be? (I was thinking aqua to set them apart) Ideas?