Using binoculars, one of the onlookers spotted a pair of very faint orange lights and an even dimmer red light, almost directly to the south of the Viewing Area. It took a while for my eyes to adjust enough that I could even see these with the naked eye, but a 3-minute exposure with the camera revealed both lights clearly ... and also confirmed that they were completely static. However, even among those who knew that the white lights to the southeast were cars, anything new and unexplained was cause for excitement.
The red one is probably a radio tower on top of the distant mesa, and the orange ones are most likely sodium lights outside one of the ranch houses located about 6 miles south of the Viewing Area. The people who go to see the Marfa Lights-- self included-- are looking for something mysterious, and it is easy to get caught up in the moment and declare any unexplained light on the horizon to be a Marfa Light. The Marfa Lights Viewing Area is more a showcase of desert visibility than it is a showcase of unexplained phenomena. It also serves as a shrine to the human tendency to never let the facts get in the way of a good mystery.