Brown, copper, and amber shades provide natural contrast, and help block blue light and glare. Not only do lenses in this range of colors enhance contrast, they are soothing to the eyes, and are favorites of professional drivers and pilots.
If you do a lot of driving in traffic, you should consider choosing sunglasses with polarized lenses. Polarized lenses may be any color, and they are great for blocking glare like the glare on water and the glare that’s produced by horizontal surfaces of cars.
It’s no wonder dark green lenses have been a favorite of pilots and beachgoers for decades. They look terrific and help keep eyes comfortable without compromising contrast.