Hello. I just ordered a replacement 300W incandescent light bulb for my Kodak carousel slide projector but the process did get me thinking ... those bulbs are hot and for (especially) Kodachrome slides there was always the concern about the heat of prolonged projection causing the color dyes to fade. I realize that color temperature would be a concern but has anyone found a "cooler" (less heat) option for projector bulbs? I'd love it if I could get an LED bulb but I've searched Google and Amazon without any luck. I did see some halogen options. Does halogen burn cooler (less heat)? Thoughts? Ideas?