A nighttime wedding can be classy and romantic, but what attire is appropriate for your guests to wear when you get hitched after dark? Though black dresses are a no no for any day time wedding, they are perfectly appropriate for any formal even in the evening... even a wedding. Your female guests will look great in black cocktail dresses at your night wedding, and they will fit in with more romantic atmosphere. Candlight weddings after dark are especially romantic, and your guests will glow nicely for you wearing black. Night is the only time during a weddding when it’s appropriate color... this isn't a funeral after all... but if you do have your wedding, reception, or both in the evening, then black cocktail dresses are totally appropriate... and totally classy choices.