C.R.S. § 37-43-174

Service of such published or posted notice shall be deemed complete at the expiration of ten days after the last publication or posting and mailing thereof. At the expiration of the time required by such order to show cause, and not less than twenty days after the service of such notice, whether by personal service or by publication or posting, such district court shall be vested with complete jurisdiction over both the subject matter of such petition and of all parties in any manner concerned or affected by it, and thereafter its proceedings shall be governed by the Colorado rules of civil procedure except only as modified or controlled by sections 37-43-169 to 37-43-178 .