Suit color theme?

Suits are usually neutral colors that go with anything, so you can't really go wrong - I think black or navy blue would look good!

As others have said, any color would look nice. As far as ties go, I'd probably match them with whoever they are walking with.

We're doing shades of blue for our wedding and got the groomsmen ties that matched the dress color of the bridesmaid they'll be walking out with! We have 2 bridesmaids and 3 groomsmen, so MOH and BM are in one color and then the one bridesmaid and two groomsmen are in another.

I think matching the tie to the bridesmaids is a cute idea, or just mixing them up would be fine too! Or maybe a floral or pattern that pulls in a few of those colours/?