Irrefutable proof that a brown gingham overcoat and a dark brown plaid three piece suit look amazing when paired together in a polished look for today's guy. When in doubt as to the footwear, go with dark brown suede tassel loafers. As a 30-year-old gent, you probably want to start dressing in a sleeker manner. If that's the case, outfits like this are a safe option.