This relaxed combo of a mustard crew-neck t-shirt and olive chinos couldn't possibly come across as anything other than outrageously stylish. If you want to easily rev up this look with shoes, complement your getup with a pair of brown leather desert boots. There's nothing like a knockout look to cheer up a dreary fall day. This combination should inspire anyone who had doubts about donning casual outfits as a middle-aged gentleman.