Colorado Revised Statutes Title 18. Criminal Code § 18-4-502. First degree criminal trespass

(a) Knowingly and unlawfully enters or remains in a dwelling of another;  or

(b) Enters any motor vehicle with intent to commit a crime therein.

(2)(a) First degree criminal trespass committed pursuant to subsection (1)(a) of this section is a class 1 misdemeanor, but it is a class 6 felony if the dwelling is inhabited or occupied.

(b) First degree criminal trespass committed pursuant to subsection (1)(b) of this section is a class 1 misdemeanor.