Seriously, why do people waste time and money to go to look at yellow aspens? Sure, bright yellow is a fun color, but you could stay at home, close your eyes, and imagine the color yellow. It would be just as vivid.
If your imagination needs help you could buy a blue-ray DVD travelogue put out by National Geographic, say, "America's Top Ten Fall Color Road Tours." Don't underestimate how good the modern big screen televisions have become. If you are still not satisfied because your retinas haven't yet registered all that they are physiologically capable of, then go to menu-setup and blast the contrast or saturation on the television screen.
I camped up there one night. It stayed warmer than expected. Forests serve a valuable purpose in May and June when they shield a camper from the lethal southwestern sun. But at the September equinox, forests are just a depressing nuisance, as they rob you of daylight at the beginning and end of day.
All the bitching and moaning up there was worth it, just so I could experience the relief of seeing the land open up on the drive back down to the San Luis valley (Alamosa, CO). I turned towards the sun, driving south on US285, and soon crossed the New Mexico border.
There are a couple mountains in this area that have always impressed me. They are symmetric volcanic swellings; they look so noble the way they lord over the surrounding sagebrush flats. They almost look too gentle to have ever erupted. But from the volcanic rocks in the area, lava at least crept out of these mountains.
I eagerly look forward to seeing them every time I pass through the upper Rio Grande. The world seems so glorious and bright and BIG (!) when the sun rises and sets on the real horizon, instead of 30 degrees up in the air.