C.R.S. § 18-8-612
18-8-612. Failure to obey a juror summons
18-8-612. Failure to obey a juror summons. (1) A juror commits failure to obey a juror summons if he receives a summons to serve as a trial or grand juror as provided in section 13-71-110, C.R.S., and knowingly fails to obey the summons without justifiable excuse.
(2) Failure to obey a juror summons is a petty offense.