Colo. Rev. Stat. § 25-29-114
Any holder of bonds issued under the provisions of this article, or any coupons appertaining thereto and the trustee under any trust agreement or resolution authorizing the issuance of such bonds, except to the extent the rights under this article may be restricted by such trust agreement or resolution, may, either at law or in equity by suit, action, mandamus, or other proceeding, protect and enforce any and all rights under the laws of the state or granted under this article or under such agreement or resolution, or under any other contract executed by the authority pursuant to this article, and may enforce and compel the performance of all duties required by this article or by such trust agreement or resolution to be performed by the authority or by an officer thereof.
C.R.S. § 25-29-114