Boat shoes are summer wear. They are best paired with slim, clean-lined jeans, khakis, slacks or shorts. As a classic rule of thumb, boat shoes should never be lighter in color than your pants or shorts. Earlier, boat shoes were available in neutral colors like navy blue, brown, gray, beige or black only. Recent years have seen vividly-colored shoes in ruby red, royal blue, grass green, orange, yellow, ideally made in cowhide but are also available in suede and patent leather.