We just yesterday returned from a trip to Colorado's Front Range ... spectacular scenery and weather ... especially with the aspen Fall colors!!!
Here's proof of the next to the highest altitude we traveled through with our Class C in Colorado (another pass we went through was about 200 feet higher):

Here's a photo backwards from our seat on the steam railroad between Durango and Silverton:

Here's a photo of the Fall colors that DOES NOT do them justice:

Here's us driving through some more of those Fall colors:

Here's some Colorado color that's not related to Fall:

Here's my view when out hiking about to enter a typical Colorado town (in Verde Mesa):

Enjoy Colorado!