A motion for a change of venue or for a change of judge under these Rules may be made at or before arraignment or, for good cause shown for a late filing, at any time before trial.
Colo. R. Crim. P. 22
Annotation Am. Jur.2d. See 5 Am. Jur.2d, Arrest, ยงยง 10, 12, 25, 27, 29-33.