Colo. Rev. Stat. § 32-11-526
Notwithstanding the provisions of section 32-11-525 or of any other law, this state, acting by and through the state agency authorizing the acquisition of district bonds or other district securities, may agree with the board to exchange any outstanding securities of the district held by the state or any agency, corporation, department, or other instrumentality of the state, for funding or refunding bonds or other funding securities of the district, or otherwise to surrender at such price and time and otherwise upon such conditions and other terms and in such manner as may be mutually agreeable, such outstanding securities to the state for funding or refunding or other payment at any time prior to their respective maturities or to any date as of which the district has the right and option to call on its behalf such outstanding securities for prior redemption as expressly provided in the outstanding securities and any resolution, trust indenture, or other proceedings authorizing their issuance.
C.R.S. § 32-11-526