In my experience in buying glasses, if someone else is paying for them, you need the dr to say everything. Tinting, coating for them to cover it. If you are paying or do not paying for extras you can ask at the place that makes your glasses. Its my experience for most of my life you cant get a mirror coating on a plastic lens and glass lenses for my needs would be too heavy to wear. Most places have demo lenses you can hold up and see for your self to try a tint or a mirror coating. My past glasses had copper colored titanium franes and copper tint so they matches. The titanium frames was to keep from turning green.