Only 97 days until my wedding and I'm trying to figure out the details of my groom's outfit!

He's wearing a navy blue pinstriped suit to the wedding. The Nordies stylist we worked with paired it with cognac colored shoes and we thought it looked great, but then my mom said he should wear black shoes so now I'm having doubts.

Considering he is a red head (the cognac shoes bookend his hair...) and the wedding isn't super formal or traditional, what color shoes do you think would look best with a navy suit? I haven't a clue...

Help!