Choosing color lenses for sunglasses shall depend on your usage because different colored lenses can be available for different occasion. If you are hunter, you can choose orange or yellow colored lenses for sunglasses. They can increase contrast that give you better vision. If you just wear for fashion, you can choose black colored lenses. They are not only cool, but also prevent strong sunshine. Of course, you shall not wear a pair of black sunglasses in a environment with dark light.
While many people choose sunglass lens colors purely for aesthetic reasons,different lens colors actually serve different purposes. The tint of your sunglass lenses can enhance your depth perception and reduce eye fatigue in different environments, improving your performance across a number of sports and activities. In most cases, the grey is more popular.