Have you seen the commercial on TV where Hoover Dam and so much of Las Vegas is draped in an orange cloth? Wondered how they did that? It's really an interesting article...
http://www.lasvegassun.com/news/2010/oct/02/vdara-death-ray/
http://www.lasvegassun.com/news/2010/oct/02/vdara-death-ray/