C.R.S. § 18-2-401

(1) Renunciation and abandonment are not voluntary and complete so as to be a defense to prosecution under this article if they are motivated in whole or in part by: (a) A belief that a circumstance exists which increases the probability of detection or apprehension of the defendant or another or which makes more difficult the consummation of the crime; or (b) A decision to postpone the crime until another time or to substitute another victim or another but similar objective.