The color of the lenses in sunglasses can significantly impact your vision by altering contrast, depth perception, and color balance. For example, gray lenses reduce overall brightness while preserving natural color balance, making them ideal for everyday use. Brown or amber lenses enhance contrast and depth perception, which can be beneficial for activities like driving or playing sports. Yellow or gold lenses are excellent in low-light conditions as they increase contrast, making them suitable for foggy or overcast days. Green lenses balance contrast enhancement and color accuracy, offering versatile use in various lighting conditions.