Camouflage measures are well known. There is no need to guess or infer colors.
http://www.shipcamouflage.com/usn_cv.htm
And the Lex did in fact carry the Measure 21 "Navy Blue" scheme through most of the war (most of the other carriers switched over to Measures 32 and 33):
Quote:
Vertical Surfaces:Navy Blue 5-N All Vertical surfaces without exception.
Horizontal Surfaces:Horizontal surfaces, Deck Blue, 20-B.
Wood Decks.Wood decks except on submarines and carriers shall be darkened to the color Deck Blue. Deck Blue paint shall be used in lieu of stain for this purpose.
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MS 1 was common on carriers at the start of the war, and did not require carrier decks to be painted.
Quote:
Vertical Surfaces:
All approximately vertical surfaces above the top of the stacks shall be painted Light Gray 5-L.
Horizontal Surfaces:
All horizontal surfaces except wood decks shall be painted Dark Gray 5-D. The systems differ only in the painting of the vertical surfaces. In case of doubt, as on sloping surfaces, use Dark Gray 5-D.
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as was MS 12.
Quote:
Vertical Surfaces: Vertical surfaces from boot-topping to level of main deck or highest sheer line, continuous for full length, on all vessels except carriers, Sea Blue 5-S.
On carriers, including Lexington and Saratoga, from waterline to level of hanger deck, Sea Blue, 5-S.
Vertical surfaces above main deck level, (hanger deck of carriers) to level of the top of the highest superstructure masses, Ocean Gray 5-O. Pole masts, yards, slender upper works above level of top superstructure masses, Haze Gray 5-H.
Horizontal Surfaces:Horizontal surfaces, Deck Blue, 20-B.
Wood Decks.Wood decks except on submarines and carriers shall be darkened to the color Deck Blue. Deck Blue paint shall be used in lieu of stain for this purpose.
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And here is an article specifically on blue flight decks:
http://www.shipcamouflage.com/specia...ightDecks.html