C.R.S. § 42-6-140: Registration upon becoming resident.

Within ninety days after becoming a resident of Colorado, the owner of a motor vehicle shall apply for a Colorado certificate of title, a license, and registration for the vehicle that is registered, that is licensed, or for which a certificate of title is issued in another state. Any person who violates the provisions of this section is subject to the penalties provided in sections 42-6-139 and 43-4-804 (1)(d), C.R.S.