I'm in beautiful Portland Oregon. I think it's zone 8b. I got out real early and planted the early cold season crops. We had a few frosts after I planted but it didn't phase the early crops. I also plant at the end of summer and overwinter crops like beets, kale, carrots and other greens. I'm going to plant fava beans this fall as well. They're supposed to be a good overwintering cover crop.
I don't have very much space so I'm utilizing as best as I can. I've done a bunch of reading on succession planting. My goal is to have my garden full 365 days a year. It can be done with the right crops and proper planning.
You have a great state there in Colorado and if I ever moved from Oregon Colorado would be at the top of my list. I've spent a bit of time there all across the state. Denver, Colorado Springs, Canon City, Trinidad, Pueblo, Ft Collins, I've been all over. But my favorite place was Durango. Beautiful little town. I spent a week in Farmington NM and then drove up into Durango for another week before flying back to Portland. The Animus river ran right behind the hotel I was staying at. Beautiful country. Unfortunately I was always there for work and didn't get to explore as much as I would have liked. But as Arnie says, "I'll be back".