That depends on what the "something" was and how long ago. If it was a felony, NO! If it was a misdameanor Domestic Violence or a Drug Trafficking type charge and has been since this law was passed, again NO! If it was a petty offense, traffic offense, a misdameanor with no conviction and was fairly old or when you were a minor, then maybe.
Have you bought a gun recently from an FFL holder? Was it here in Colorado? If so, then you passed the Insta-Check and will most likely pass the same check for the CCW. Karl.