“We’re not a tax-funded agency,” says Travis Duncan, CPW’s public information officer. The agency is primarily funded by the sale of passes on the parks side and hunting/fishing licenses on the wildlife side. Federal funding for wildlife purposes comes from excise taxes on firearms, ammunition, and archery equipment, but how much CPW receives is based on the number of hunting/fishing licenses sold in Colorado.
Here is CPW's own accounting for its funding, from their own website, under "Wildlife Revenue":
https://cpw.state.co.us/aboutus/Pages/Funding.aspx19% is from Federal and State Grants, most of which are tax-payer funded
7% is from Great Outdoors Colorado, which is funded by taxes on lotteries and gambling
Even in the CPW quote above "Federal funding for wildlife purposes comes from excise taxes on firearms, ..." it mentions that the federal funding comes from excise taxes.
So, although most of SWA areas are not funded by taxes, roughly a quarter is.