If day or night, you see a Light or Aircraft not moving if it's coming towards you! You'll see movement if it's not coming at you!! I would still put Red on the Left Side, Green on the Right Side and White in the tail position. Once below 10,000 feet AGL a Turbine (Jet) Airplane have to be slowed down to 250 knots or less. If I was approaching a Final Approach Point I could still be at 200 knots and as I locked onto the Instrument Landing System (ILS) dependent on gross weights and traffic I could still be above 140+ knots passing thru 400' AGL. Properly lighted Position lights would let a Approaching Pilot know at a glance if he would clear a drone that shouldn't be in his Approach Path. Years ago we'd worry about small pre-drone Homebuilt Airplanes climbing out right thru our approach paths in solid IFR Conditions! I've had many near missed over the years!