The fashion crowd has chimed in and they're certainly not wrong. That said from a practical standpoint, outside of the one-off fashionistas and overzealous folk working the door, very few people will be paying that much attention to your shoes if they're matching your pants.

I am completely wrong if this is a snooty crowd having a wedding at a country club or something extreme like that. For the most part though your average person is enjoying the wedding not inspecting everybody's shoes.