I wouldn't have minded at all as a bride. But yes, maybe you could check.
I remember wearing a black dress to a wedding and also sparkly flip flops at the reception
. In my defence I had just given birth and my baby was breastfeeding and in a sling all day. I ran it past the bride and she couldn't have cared less! Didn't even know why I was asking. I'd read black meant disapproval of the match or something, which I definitely did not disapprove of!