Colo. Rev. Stat. § 37-43-149
Taxes for the payment of interest and principal of said refunding bonds shall be levied and thereafter collected in the same manner as provided by law for the levy and collection of taxes for the payment of interest and principal of an original issue of irrigation district bonds. Such bonds and coupons shall be receivable in payment of said taxes, as is provided in the irrigation district law concerning original bond issues. All taxes for interest shall be kept by the county treasurer as a special fund to be used in the payment of interest only, and all taxes for the redemption of such refunding bonds shall be kept by such county treasurer as a special fund to be used for the redemption of the principal only of such refunding bonds. The revenue laws of this state for the assessment, levying, and collection of taxes on real estate for county purposes and the disbursement of such taxes, except as modified by sections 37-43-144 to 37-43-151 or by the irrigation district laws of this state, shall be applicable for the purposes of sections 37-43-144 to 37-43-151, including the enforcement of penalties and forfeitures for delinquent taxes; but if in any year a sufficient amount is not collected for payment in full of principal or interest installments falling due in such year on any specific piece of property in said irrigation district, the delinquency on such property shall be included in the next assessment thereafter levied against said piece of property.
C.R.S. § 37-43-149
For collection of taxes, see article 10 of title 39.