For a detailed summary of the chaos in Colorado, please refer to the latest publication from the Rocky Mountain HITDA group. This document is the go-to source for everything that is happening there.
If someone really wants to know about Colorado, they should start with this document. I strongly urge review of the youth use data, starting on page 9, which shows that Colorado is ranked 3rd in the nation for current marijuana use among youth (56.08 percent higher than the national average). They were ranked 14th in the nation in 2006 before commercialization began.
For a journalistic view of these problems, please see this series of recent articles published by The Colorado Springs Gazette — a 2014 Pulitzer Prize winner — to investigate the impact of marijuana legalization on Colorado and beyond.