I have a poor copy of a photo of a C.205v yellow 1 supposedly from Dec 1943
There are photos of "yellow 1" in D'Amico and Valentini's "Camouflage and Markings of the Aeronautica Nazionale Repubblicana, 1943–1945" (Classic, 2005). It is given there as MM 92212: you can just make out the last two digits in one of the six photos and the Gruppe bar is visible on the port side.