I found this strange beetle at work the other day. I've never seen one of these before which I thought was strange given how much I am outside in the woods. When I got home I googled beetles of Colorado - Still nothing. Finally after a long search, I come to find out that this is actually an invasive species of wood burrowing beetle called the Asian Longhorned Beetle. It is incredibly destructive to wooded areas if their population gets out of hand. So far this is the only one I've seen, but I'll be on the look out for more.
Here is a color version from a different angle. http://www.lohrphoto.com/Photography/Honest-Critiques/16426338_3bdjDF#1452783298_Kqcc9V4-A-LB