I have been reading a lot about the dangers of adding heat lamps inside of a coop (fire hazzard condensation etc). I was thinking about those old style Xmas lights with the nite light sized bulbs. If one were to add a string of bulbs (red) under the roost they would give off a dim red glow and throw enough heat to slightly warm the roost at night. I wouldnt attach them directly to the roost but to a small (3/4"x1") board shrouded with metal screen. For easy installation and removal. Has anyone tried anything such as this? Can anyone think of reasons it might be harmful? All opinions welcome.