A light blue dress shirt and dark green wool dress pants are a refined getup that every smart gent should have in his collection. Not sure how to round off? Add dark brown leather casual boots to the mix to change things up a bit. In winter, when warmth is everything, it can be easy to surrender to a less-than-stylish ensemble in the name of convenience. This ensemble, however, is a vivid example that you can actually stay snug and remain equally stylish in winter.