Check your phone in a pitch-black bedroom and you go half blind for a while after you put it down. Tesla's new Roadster screen is red on black, which happens to be the oldest fix for that problem there is, and fighter jets actually had to give it up. It takes your eyes about 30 minutes in the dark to reach full night vision, and a few seconds of bright white light can throw most of that away. That's because your retina basically runs two cameras. Cones handle color and detail during the day.…