I'm getting married in a navy suit from SS. It's a summer afternoon wedding in a garden outdoors (weather permitting).
I wanted the groomsmen to wear something lower formality and some of them own one (others are willing to buy) but they aren't all one color (mix of blue and grey).
Basically, we'd be in an arrangement something close to this:
Is this a problem? I don't think it is, but I want some SF feedback. I also have some specific questions.