C.R.S. § 24-30-1111

(1) Each state department, agency, division, board, commission, committee, and educational institution which has installed a postage meter shall place an imprint plate on such meter and a notice attached to the meter showing that the metered mail is official state of Colorado mail and that there is a penalty for the unlawful use of such postage meter for private purposes. (2) Any person who uses a state-installed postage meter for private purposes commits a civil infraction and shall be punished as provided in section 18-1.3-503 .