Actually, it's not really fake. Denver and the Front Range have a real Western heritage: mining. That's what brought the white settlers here in droves and resulted in the establishment of the state. The fake part is the imagined Hollywood-style cowboy heritage.
We get a walloping dose of that fakery every year around this time because of the stock show. There are TV and radio ads featuring gravelly voices speaking with that bizarre distortion of a Southern accent that Hollywood uses to depict anything Old Wild Western (and sometimes anything rural, no matter what part of the country a movie is set in).
The real history of the West in general and Colorado in particular is fascinating, colorful, and an important part of US history. I wish we'd hear more about that and less of the Hollywood version, although I fear that most Americans see their entire history through the lens of the movies.
Speaking of movies, Benjamin Button sucks.