C.R.S. § 1-7-603

If any designated election official wishes to count the votes cast at a location or by a method other than authorized by this code, the designated election official may present a plan, for approval by the secretary of state, that delineates the process for assuring accuracy and confidentiality of counting. The plan shall be submitted to the secretary of state and approved no later than forty-five days before the election at which the plan is to be implemented.