C.R.S. § 2-5-105.5

(1) A contract or extension of contract entered into after May 25, 2017, to publish or print the Colorado Revised Statutes pursuant to section 2-5-105 must specify that the paper used must meet the alkaline reserve minimum requirements and acidity levels for uncoated paper established by the American national standards institute and the national information standards organization (ANSI/NISO Z39.48-1992 (R2009)). (2) This provision does not affect any contract that is in effect on January 1, 2017.