Not true, in CO, if the CDOW doesn't lease the hunting rights on State land, the public can not hunt them.
As to WY, there are no federal BLM lands that allow a lease holder to deny access that I'm aware of.
Accessible state lands are ALL open to the public, with the exception of cultivated row crops on State land. Currently ONLY the cultivated portion of a section is off limits to hunting, you can hunt the portion that doesn't have row crops. Also, even row cropped State lands are open for hiking, bird watching, everything but hunting and fishing. For the record there are about 16K-18K acres of road accessible State lands that are row cropped and off limits to hunting and fishing. Just last week, myself and another WYBHA board member had a meeting with the OSLI office to discuss opening that up to walk-in only hunting and fishing.
You can also fly into State land now and hunt there the same day you fly. Before JM77 and I got the aircraft regulations changed, it was impossible to legally fly into State land and hunt it because of the 24 hour wait and NO CAMPING rule on State lands.