Groom no tie/bowtie

Hi! My FH and I are getting married in April 2020. It's a morning wedding (11am) in a barn, so I suppose it's a little more casual. He wants to wear his blue suit pants and a dress shirt (with brown shoes and belt) but would prefer not to wear a tie or bow tie and doesn't really want suspenders either. I suppose I don't really mind, since it's his day too and I want him to be comfortable. And I know he will still look very handsome! I'm just wondering what I should/could have the groomsmen wear so that they don't match/look exactly alike with FH. I'm thinking grey or tan pants for the guys since I feel like trying to find pants in the same color blue as FH would be a nightmare. Would it be weird if the guys had ties/bowties/suspenders when the groom wouldn't? Should I have them wear a different color shirt than FH? Wedding is still 7 months out, so I wasn't planning of thinking about this all yet but FH said his guys were starting to ask so I thought I better try and figure out a basic idea to work with.