Colo. Rev. Stat. § 32-15-123
After all the principal, interest, and premium, if any, of the special obligation bonds issued pursuant to this article are paid in full and the levy and collection of sales tax and admissions tax revenues by the district is discontinued, but prior to the repeal of this article, any funds collected by the district that are, in the sole discretion of the board, deemed not to be necessary for the anticipated expenses and reserves of the district shall be credited at least annually to the general fund of each county, city and county, city, and town which is included, in whole or in part, in the district based upon the proportion of the total amount of sales tax revenues collected pursuant to section 32-15-110 within such county, city and county, city, and town to the total amount of sales tax revenues collected pursuant to section 32-15-110 within the district. For purposes of this section, the total amount of sales tax revenues collected within a county shall not include any sales tax revenues collected in any city or town located within such county. In addition, in computing said proportion, any sales tax revenues collected in any county, city, or town which is not included, in whole or in part, within the geographical boundaries of the district shall not be included in the total amount of sales tax revenues collected within the district.
C.R.S. § 32-15-123