I’ve been to fortunate to have visited almost every campus on that list. I agree Colorado is high on most lists. My comment is also my opinion based on being there and expectations from my friends that went there (who always describe it as the coolest place ever).
You also happen to have picked the one that ranks it the highest. It gets high rankings mostly because of its setting. The actual campus is nice with buildings that all look the same. When you go into them, a lot are very old and need updates. Student center was very cool. Definitely not a bad place to spend 4 years or more.
I also go to Yale a lot. I love the old/historical city schools but outside of the architecture and occasional green space, think it’s also a little high on the list because it’s Ivy League.
Princeton and Dartmouth well ahead Yale for campus beauty. Middlebury underrated.