C.R.S. § 39-22-1301
39-22-1301. Voluntary contribution designation - procedure
39-22-1301. Voluntary contribution designation - procedure. For income tax years commencing on or after January 1, 1989, each Colorado state individual income tax return form shall contain a line whereby each individual taxpayer may designate the amount of the contribution, if any, he wishes to make to the homeless prevention activities program fund.