They haven't been made for years! APC's were discontinued long before Depot began their production of them.
IIRC, APC's were ALL clear. Early production Depot's were also all clear.
But then the bureaucrats, legislators & lawyers stepped in & the lights were required to have a red reflector.
If a cop's on his game, & the lights don't have the reflector, be prepared to either be asked to remove them, mod them or get a ticket for them.
When you can find them, (They do show up here & on C/L every now & then) & if they are in decent shape, I've seen them have an asking price of anywhere between $100 to (*cough-cough*!) $500.00!!! (That was for a pair that had been never mounted, still in the box. Who knows if they sold at that price!)