Colo. Rev. Stat. § 25-1.5-405
There is hereby created in the state treasury the visa waiver program fund, referred to in this section as the "fund", that consists of the application fees collected pursuant to section 25-1.5-404 (1)(e) and any additional moneys that the general assembly may appropriate to the fund. The moneys in the fund are subject to annual appropriation by the general assembly to the department for the direct and indirect costs incurred by the department in performing its duties under this part 4. Any moneys in the fund not expended for the purpose of this part 4 may be invested by the state treasurer as provided by law. All interest and income derived from the investment and deposit of moneys in the fund shall be credited to the fund. Any unexpended or unencumbered moneys remaining in the fund at the end of a fiscal year remain in the fund and shall not be credited or transferred to the general fund or another fund.
C.R.S. § 25-1.5-405
This section is similar to former § 25-20.5-605 as it existed prior to 2013.