She wants to tie in with her partner's dark green suit though, & lots of people wear dark shades to spring/summer/autumn weddings, not just winter ones - including (gasp!) black. Not everyone has to - or wants to - wear pastel florals?
The more I read on MN about the seemingly ever-growing number of strictures placed upon wedding guests' attire, the more bizarre I find it. Much of it seems to have been driven by an obsessive need for "perfection", probably via social media. I find it quite sad that, for so many, it doesn't seem to be about getting together all the family & friends you love, & who love you, to celebrate your big day any more.
Who really gives a shit whether Uncle Tony is wearing a brown tweed suit in July? Or that one of the eight bridesmaids refused to spend £700 on the bride's choice of lime-green polyester dress, & now doesn't match the other seven? Or that the MOB is wearing a navy floral maxi dress - & no hat?!!!