I am going to start building a model of the PBY-5A Catalina and I would like the aircraft to be in RAF markings. Based on my research I understand only 14 or so PBY-5As were acquired by the RAF where they were known as the Catalina IIIA. So far I have seen two photos of a Catalina IIIAs in RAF service - both looked like they were in delivery markings of USN intermediate blue and light grey (the roundel was of the pre-July 1942 with the wide yellow ring).
However the old Airfix PBY-5A was issued at one point in time with markings for Catalina IIIA FP536 of 131 OTU, the aircraft wearing a scheme of what seems to be dark slate grey (DSG) and extra dark sea grey (EDSG) upper surfaces and sky undersurfaces (with the dividing line running along the lower part of the hull). I rather like the idea of using a DSG/EDSG scheme instead of the USN markings (I can use the DK decal set to build a 333 or 321 Squadron PBY-5A in USN colours).
A bit of surfing the internet suggests that a number of Catalina IIIAs were used by 131 OTU but I cannot see any photos of these aircraft wearing a DSG/EDSG scheme. It would make sense of course if the IIIAs were painted in these colours but I am trying to get some sort of confirmation.
Does anyone have any evidence i.e. a copy of a photo in a bok, which confirms that Catalina IIIAs were in DSG/EDSG?
I am not a rivet counter but its mortifying when you find that you have used completely the wrong colours/markings (I mean not a shade wrong - but completely). The model then feels like a failure.