Well if you compare the photos of Clifton G-AFPZ and the Lodestar G-AGIL in post #317 above .G-AFPZ shows the top (red ) nationality band under the registration darker ( due I would say to use of orthochromatic film). The top band on G-AGIL is very light suggesting it was photographed with panchromatic film and possibly an orange filter on the lens which was commonplace in black and white view photography.Yet on both aircraft the BOAC logo globe colour matches the lower nationality band so must be blue.
Of course if the colour bands were applied inverted on either aircraft the theory goes out the window, but you’ve got to assume something. Clifton also appears to have dark panels on the wing top..now THEY are believed to be orange, and similar to those on Pan American flying boats around 1940 .
(Orthochromatic film was insensitive to red , orange and yellow rendering those colours more transparent on the developed negative hence darker on the resultant print….(it could be developed by sight under a red darkroom safelight which some photographers liked)….panchromatic film rendered the red and blue ends of the spectrum more equally and some types like Kodak Verichrome Pan had built in orange filters which produced prints with blue skies rendered darker and red and orange rendered lighter (panchromatic film like colour film had to be developed in total darkness)…Edited
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