Alan Raven asked me to post this on the board in response to Jamie's artwork re: HMS Hood.
During Hood's 1940 refit, the corticene covering her shelter/boat deck was removed and replaced by a layer of semtex (with the exception perhaps of some of the bridge decks which retained their corticene covering). He doesn't have info regarding the precise pattern of the semtex runs on the deck, however.
He also plans to send me some artwork for HMS Berwick in her Berwick Blue scheme and one of the Colossus class carriers which wore a four colour scheme which included the color B40, which I will post. Details to follow.
Wishing you all health!