I don't think you need to ask anyone. I grew up in NJ and everyone I knew wore a little black dress to a wedding, that's about all I've ever worn. Most weddings I've been to it was the most common color there, maybe it's a regional thing but before now I've never even heard of black being an inappropriate for wedding attire.
I cant imagine someone caring about the color dress someone wears at a wedding anyway, strange.:space: