It is well known that the use of sunglasses tends to be a scene, and most of the scenes are outside. And the corresponding scene is the color of sunglasses for UK women lenses, sunglasses are mainly divided into the following major color lines.
Brown for ultraviolet and infrared light can be completely absorbed, and it is not a big change in color is soft, can make more comfortable glasses. Gray lenses are more neutral lenses, the light will be weak at the same time of sunglasses with best sales, will not be too big to change the true color of things.
Green and gray belong to the neutral color system, because of the strong green light, it is comfortable, suitable for people with eye fatigue. But because the green lens of cheap sunglasses will make the surrounding landscape change.