Disclaimer - I am not a lawyer, nor a legal expert.

It's legal to have a concealed, accessible, loaded/chambered handgun in your car in Colorado, whether you have concealed handgun permit or not (provided you can legally possess a firearm to begin with). Also, in Colorado, a person is not required to tell an officer they have a gun if they are pulled over, whether they have a CHP or not. And in my county, there is no record of CHPs that an officer can pull up to reference (it's not tied to any accessible database).

That being said, I've not been pulled over since I got my CHP, but pondering the possibility, I've figured that I'd inform them about it just out of courtesy, but not make a big deal out of it.

My girlfriend's nephew-in-law is a local cop who knows I carry...I suppose I'll ask him how he feels about being informed during traffic-stops.