This pairing of a charcoal crew-neck t-shirt and charcoal skinny jeans is hard proof that a straightforward casual look can still be really interesting. Channel your inner Idris Elba and lift up your outfit with dark brown leather casual boots. In winter, when functionality is essential, it can be easy to surrender to a less-than-stylish look. This look, however, is a clear example that you can actually stay cozy and remain equally stylish during winter.