Hello, I have a wedding coming up (as a groomsman if that matters) and in need of black cap toe oxfords. I did a few searches and nothing came up so my question is: would black oxfords with a natural sole be too casual? These are the shoes in question: http://www.wjk-exclusive.com/item/boots/11ss/8016lc0599.html. I would also wear these for other formal events and interviews. If anything, I could always dye them black but curious to hear what you think.