So, a guess wore a dress like this to my wedding, and I didn't notice, not once! I don't think anyone really noticed at the actual wedding either, as she wore a different coloured coat and shoes etc.
However... and I don't know why this is, maybe it is how the photographers process the photos, but it was very apparent in the wedding photos that she wore a white dress! (Even with patterns). Maybe it was because not a single other person (except me) wore a white one! I don't care at all, it doesn't bother me as she's lovely and I'm sure she looked really lovely on the day, so I hope no one else much cared. But it's quite funny to me how anyone else wearing white shows up VERY clearly in wedding photos against a backdrop of everyone else not. They're just photos though, but it made me think I would never try it myself!