Yeah, they no longer honor non-resident permits of other states, and they don't issue non-resident permits. I got my NH permit specifically because I'm going to CO to visit with family in November, then they passed this. I emailed the governor and told him not to sign it, but to my shock he ignored me.
The one mitigating factor is that open carry is legal in CO, though I understand you're in danger of prosecution for "disturbing the peace" (or whatever else they make up on the spot) in Denver and some other urban areas. This is what I need to learn more about before I go.
It's been discussed on
TCC &
THR.