I have never once recall people who say toy guns are easy to ID have proven it true. I do recall a gun expert wrote an article saying this and he later on shot someone with a toy gun.
===================================================================
I find this baffling. A BB gun is not really a toy gun. iyu can,. as they say, put an eye out with one of those. A toy gun would shoot foam balls or marshmallows or other harmless projectiles. It should not be capable of harming anyone.
Perhaps the best way to actually shoot a cop would be to glue a bright orange plastic tip to the end of the barrel of a real gun, and fire away.
I have no desire to shoot cops and I doubt that anyone would actually try that. It would be a sissy way to shoot the cop, and cop assassins probably think of themselves as macho men. This would clearly be against the Code of the West--like shooting some varmint in the back.