By Ray Lowe Weddings often come with a slew of constricting “dos” and “don'ts.” Some are reasonable: Never wear white as a guest, only buy gifts from the bride and groom’s registry, abide by the chosen dress code. And some are little archaic: Youthful, single ladies for the bridal bouquet toss only; and my (least) favorite — never wear black. While dark hues in general have a traditional connotation for funerals and mourning, the LBD has proved itself enough of a staple in modern times that we can do away with this antiquated notion.