Sometimes, people are always very confused that how to choose the dark prescription sunglasses during shopping online. But they don’t want completely black lenses and would like fairly dark lenses. So need to distinguish the G-15 pretty dark or grey, or brown. Many people can not be sure whether they will look well with colored lens sunglasses, such as brown sunglasses. The background is that modern sunglasses manufacturers and designers have greatly extended the variety of sunglass products. (more eyeglasses…)