Don't want to burst anyones bubble here but I seriously doubt any kind of digital reproduction of a wartime image truly reflects the actuality of the subject as photographed, there are simply too many variables possible in the process. Quality of film stock, filters used, printing process, reproduction process, scanning from print or slide, degradation of the original picture and so on...
It doesn't pay to be to pedantic about image profiles and colour tempratures and RGB values when you are dealing with 60-odd year old originals.
The paint in your pictures 'appears' to be ZCY, how it got there and how widespread the practice was is anybodys guess.
I am well aware of issues regarding colour reproduction from my own professional experience in this area including amongst other work experience in Printing, Photography, Graphic Design and illustration. I also have experience maintaining image library collections for the media (love that vinegar smell as immense quantities of old negatives go south).
It can't hurt to be pedantic either, some colour and some effort is better than none at all and I did pay for the opportunity.
Could that be Zinc Chromate (Yellow) on the hangar structure shown below behind the Spitfire F Mk.IXc spinner, seat and wing in England during November of 1942?
As an addition here is a pic below showing the crowbar as affixed to the cockpit door on a Spitfire F Mk.IXc Note the colour of the crow bar which is clearly not Grey-Green in fact it is worth noting I have been unable to find any colour pictures from the era that show the crowbar was ever painted Grey-Green or of course Red either.
It is worth looking in; Ethel, Jeffrey L., Sand, Robert T. Fighter Command, Motorbooks International, Osceola, 1991. p. 32, 36, 122. for further examples of this.
Edited by Daniel Cox, 07 December 2010 - 01:11 AM.