Reach for a black crew-neck t-shirt and olive chinos to create an interesting and modern-looking off-duty outfit. A pair of navy and white canvas low top sneakers is a nice idea to complement your look. If it's one of those gloomy fall afternoons, what better to brighten things up than a dapper getup like this one? When it comes to casualwear for adolescents, this combo looks nice on most gents.