think light blue ties would look fine, to match the maid of honor's gown. Plain
black ties would also be okay, if the men will have some color in their
boutonnieres to keep their look simple and festive, but not funeral.
You *might* find a silver gray that you like to pick up the silver accents in
your gown, but that might be a little more difficult to match.
The wedding sounds not-too-formal, so you could also consider a nice patterned
tie with perhaps black and light blue, or black and silver gray. It would give
nice contrast, but still be manly and also useful after the wedding.
Good luck in your planning, and much happiness in your marriage.
Foreverwed.com expert-- Sara L. Ambarian
Choosing Your Bridal Party Q & A: What you need to know