Marrying a brown shirt jacket with a dark brown long sleeve shirt is a great idea for a casually elegant ensemble. For a more refined take, introduce a pair of dark brown suede loafers to this getup. If you're searching for a cool getup that will take you from winter to spring, this is it. As you slip into your 30s, you probably want to start dressing more like a mature gentleman. That's when outfits like this are a life saver.