“Never wear your brown shoes with dark suits”

[DancesWithWife]

I saw this on YouTube today and thought it was interesting. I have no fashion sense or style so I would never tell a brother or sister how to dress or what shoes. I just thought his presentation was interesting.  

 

[boodles]

He says, "Dark suits are inherently dressy, and brown is inherently a formal color." I think he meant to say informal, because if brown is formal, why not wear it with dressy? Or do dressy and formal not go together? Very confusing.