C.R.S. § 7-110-101

(1) A corporation may amend its articles of incorporation at any time to add or change a provision that is required or permitted in the articles of incorporation or to delete a provision not required in the articles of incorporation. Whether a provision is required or permitted in the articles of incorporation is determined as of the effective date of the amendment. (2) A shareholder does not have a vested property right resulting from any provision in the articles of incorporation, including any provision relating to management, control, capital structure, dividend entitlement, purpose, or duration of the corporation.