One writer documenting DefCon referred to Las Vegas as a "gaudy hellscape", which I think is the most perfect description ever and not in a bad way. The artificial colors everywhere heighten awareness of all the natural colors too (and the desert heat can certainly conjure up an inferno). This fairly ordinary scene behind the Tuscany Hotel is enlivened by the amazing colors of the buildings, and by my near-delirium due to the 110-degree temperatures.
Bally's Hotel, site of DefCon.
One of the (fairly normal-colored) hotels where we stayed.