I disremember, but think its USC 18, title 44 (930?) & down the list quite a ways, that states (obviously paraphased poorly) if your state has provisions for licensing, it's not a bad thing to have possession in school zones ... a quick search engine for the ref'd USC & a "find on this page" will get you there.
Seeker, that's too strange that there's a provision that says no firearms in wilderness areas. I'm not aware of any fed statute that says anything along those lines & especially in CO, the wilderness areas are some of the prime hunting areas for big game.
CO's law - CRS 18-12-105.5 - says it's a felony to carry in schools except (specifically excluded) if you've a CCW. Public schools are not private property & they've no business or legal standing to prohibit.
Still waiting for some "other info" to come in, but when it does, I'll push for these signs to come down - cheap entertainment if nothing else.
Sick of self-appointed yahoos trying to push their agenda on the rest of us & more sick of the sheep buying it.