Validity not questioned after ninety days

Colo. Rev. Stat. § 31-12-311, under DISSOLUTION AND ANNEXATION (SPECIAL CHARTERS).

Colo. Rev. Stat. § 31-12-311

The validity of any proceeding to dissolve and annex any city or town by virtue of this part 3 shall not be questioned in any action or proceeding commenced more than ninety days after such dissolution and annexation is effected.

Source: L. 75: Entire title R&RE, p. 1096, § 1, effective July 1.