I wonder... If I were in a room with no windows, and completely isolated. The room had red, yellow, orange, and blue objects in it. Now, there was NO light source. So, as soon as the door closes, it's completely dark. The only light source is light that emits red light. Okay, would the red objects be the only objects ulliminated? Because, the only light they reflect is red, everything else absorbs red. If that's true, how does those red-coted light bulbs work?