Oct 15, 2009 Adopted CHAPTER 29COLORADO RULES OF CRIMINAL PROCEDURERule 4.1. County Court Procedure -- Misdemeanor and Petty Offense -- Warrant or Summons Upon ComplaintAmended by the Court, En Banc, October 15, 2009, effective January 1, 2010. Download the rule change (PDF, 88.35 KB)