I had a feeling you'd be visiting the Front Range and not the Western Slope, as the Eastern/Western regions divided by the Rocky Mountains are affectionately known. 🏔🏔🏔
You might try contacting some LHS in the Denver/Colorado Springs areas. I'd bet someone there could help you.
As far as show schedules (I'm only guessing), but this may be the off-season, as not many would be willing to brave winter driving conditions for modeling shows. Now skiing/snowboarding ó well that's another story.⛷🏂
Sorry, but that's all I've got.
Good luck and enjoy your time in Colorado!🍺