As you may have seen in the HO recent purchases thread, I bought a Con-Cor Zephyr. I am looking at buying a sound decoder for it, and while I was at it, work on the lighting. My main question is regarding the class lights. The model has white/clear ones, but at the Museum of Science and Industry, the real lights are greenish/lunar looking. My question is what color should they be? My understanding of class lights is that green means an extra section will be following and white is an extra/off-timetable train. Since there is only one Zephyr, isn’t an extra section impossible? And the Zephyr was a regularly scheduled train, so they probably wouldn’t be white either. Would they even be on in the first place? Why did this train have class lights?