I can only put one tag but this is also attire related

Hi all! Any help or insight from experience is much appreciated! One person in my bridal party is more comfortable wearing a pantsuit instead of a dress. I told them that’s fine and gave the option that they don’t even have to do a full suit with jacket and can wear slacks and a shirt/vest. Ideally, I would like the suit to match the bridesmaid dresses. My bridal party is wearing the color “Dusty Sage” from David’s Bridal, I told everyone as long as it’s that color and chiffon they can pick whatever style/cut they like. David’s Bridal has matching ties but no information on matching suits. Has anyone out there found a resource for color matching suits? My friend keeps telling me it’s fine and they will wear a dress but prefer a suit but I want them comfortable with what they’re wearing. The groomsmen and my fiancé are wearing navy with sage ties, so my last resort is to get them the same. Ideally, I’d really love them in sage but there are so many different shades of green out there, and I am overwhelmed at the thought of finding, ordering, and comparing swatches on top of everything else when planning a wedding.

Any advice to help my friend stay comfy but keep the wedding party color balanced?