507a and others WERE titled as such in official documents including the actual camouflage sheets for class designs and for individual ships. I still have some of them, and viewed others many years ago before they were burned. I still have some of my notes taken from the sheets from decades ago.
Indeed they did.
There were a range of proprietary non-slip paints available by 1941. These were listed as Black, Dark Grey, Home Fleet Grey, Light Grey and so on.
I think it's important to reiterate that it woupd help understanding of the subject a lot to stop talking about 507A and 507B as colours. They weren't - they were specific oil paint formulations and they both made Home Fleet Grey paint, one without expensive, hard-wearing and glossy enamel and one with. The actual colour was referred to by the Royal Navy as "Dark Grey, Home Fleet Shade" or simply "Home Fleet Grey".
By mid war, non-slip paints were available in any of the standardised camouflage colours also.
For aircraft carriers in particular, there was a single paint system for flight decks in the 1933 abd 1937 Rate Book of Naval Stores; Admiralty Pattern 631 Bronze Grey. This was a typical oil paint made from linseed oil, thinners, white, black and a whole heap of yellow ochre pigments. The result was a dark olive. It was to be used by scattering saw dust onto a still-wet second coat of standard red oxide primer. Once the saw dust was "glued" to the flight deck, the Bronze Grey linseed oil paint was sprayed on over it to give a rough surface for flight ops. Use of Admiralty Pattern 631 is unlikely to have continued beyond 1941/1942 once proper non-slip paints were available to order in the standardised colours. Documents and photographs strongly indicate the use of camouflaged flight decks by 1943ish.
CB.3098 published in 1943 recommended B30 for decka and horizontal surfaces on Western Approaches schemes during winter months to reduce visibility of decks to U-Boats as the ship rolled!
The time period and application is important as far as British subjects go. There is/was no universal rule.
Regards to all,
some British and German ships had camoyflage on the decks.
According to Sovereign Hobbies Colourcoats range the colours are:
For Royal Navy warship decks - Colourcoats NARN 23 - WW2 Dark Grey Non-Slip Deck Paint
For Royal Navy Aircraft Carrier Flight-decks - Colourcoats NARN46 - Admiralty Pattern 631 Bronze Grey (Carrier Flight Decks)
Sorry, can't help you on German deck colour.
1. What was the color of German steel decks? Was is Dunkelgrau?
2. Same question but for British steel decks? Was 507A or 507B used or some other color?
3. What color was used on British Aircraft Carrier flight decks?