Colo. Rev. Stat. § 24-90-516
To carry out the purposes of this part 5, the governing body is hereby authorized to issue bonds of the library district or facilities district for the purpose of financing the acquisition, construction, installation, operation, or maintenance of library capital facilities within the facilities district. The bonds shall bear interest at a rate such that the net effective interest rate of the issue of bonds does not exceed the maximum net effective interest rate authorized, payable at such times as determined by the governing body, and shall be due and payable in installments at such times as determined by the governing body extending not more than thirty years from the date of issuance. The form and terms of the bonds, including provisions for their sale, payment, and redemption, shall be determined by the governing body. If the bonds are payable from the general ad valorem taxes levied on property located within the facilities district, the bonds shall not be issued unless first approved at an election held for that purpose pursuant to section 24-90-507 (3). If the governing body so determines, bonds issued pursuant to this section may be redeemable prior to maturity, with or without payment of a premium, but no premium shall exceed three percent of the principal thereof. The bonds shall be executed in the name of the library district or the facilities district and signed by the presiding officer of the governing body with the seal of the library district or facilities district affixed thereto and attested by the secretary of the governing body. The bonds shall be in such denominations as the governing body shall determine. Under no circumstances shall any of the bonds be held to be an indebtedness, obligation, or liability of the municipalities or counties in which the area is located, and bonds issued pursuant to the provisions of this part 5 shall contain a statement to that effect.
C.R.S. § 24-90-516