Colo. Rev. Stat. § 5-20-118
Notwithstanding article 80 of title 13, all actions brought under this part 1 must be commenced within four years after the date on which any violation of this part 1 occurred or the date on which the last in a series of such acts or practices occurred or within four years after the plaintiff discovered or in the exercise of reasonable diligence should have discovered the occurrence of a violation of this part 1; except that the period of limitation provided in this section may be extended for a period of one year if the plaintiff proves that failure to timely commence the action was caused by the defendant engaging in conduct calculated to induce the plaintiff to refrain from or postpone the commencement of the action.
C.R.S. § 5-20-118
Section 19 of chapter 378 (SB 21-057), Session Laws of Colorado 2021, provides that the act changing this section applies to conduct occurring on or after June 29, 2021, including collection of debts arising out of loans issued before June 29, 2021.