According to the "Encyclopedia of German Tanks of WWII":
"Daimler-Benz was given the task of developing the 'Schmal' (narrow) Panther turret. This design was to have a small frontal area, thicker armour, to prevent penetration under hte gun mantlet, and to have the same size turret ring as previous Panther turrets. It was to be mounted on the Ausf F and Panther II. Only a prototype of the turret was completed, and the Ausf F series was never produced."
Therefore I would say, paint them any way you would like...they fall into the "what-if" category of vehicles.
Sorry...
Robert