This casual pairing of a white crew-neck t-shirt and olive chinos is a goofproof option when you need to look cool but have no time. The whole outfit comes together brilliantly if you round off with slip-on sneakers. When you're having one of those gloomy autumn days, sometimes only a killer look like this one can brighten it up. Off-duty looks for 50-year-old guys aren't actually that hard, as you see here.