Groomsman attire/ wedding colors

Hey everyone, I'm having a difficult time with planning out my wedding party attire. Our wedding is May 1, 2021. We've got our venue and vendors hired and now I'm trying to pick out attire and decor. We are doing a greenery wedding with blush/rusty rose color incorporated. Our original color pallet idea was blush and navy blue. My problem is that we are on a budget and we don't want to ask our wedding party to pay for their attire. All of them already have khaki or black dress pants. Idk if khaki would look to casual but I think navy blue shirts would clash with black. I'd like for my bridesmaids to wear the blush colored dresses. I'm just not sure how it would look without having my FH model different looks until I find something that works. (He would not be thrilled to play dress up lol) I'm very indecisive and now I'm questioning if I even want navy blue. It seems like a challenge to find a way to Subtly incorporate navy into the decor. Im thinking about changing our colors to blush, cream colors with greenery. I guess I need ideas of any kind because the only input I get from our family and friends is to do what I want. If you have pictures of your wedding party attire that would be great as well.