The 2 Atlantic schemes ( including the Caribbean) were generally referred to as " ASW Schemes 1 and 2 "; the Specification was SR-2e ( 21 June 1944)....
Scheme 1 : Dark Gull Gray 621 uppers, Light Gull Gray 620 side surfaces, Gloss White 511 below.
Scheme 2 : as above but Non-Specular Insignia White 46 (later 601) replaced the LGG on sides.
No. 2 was more common; these were on land-based patrol bombers PB4Y-1s and PV Venturas).
Carrier aircraft on Atlantic escort carriers ( F4F, FM, SBD and TBMs) same schemes .
Some OA-10s were finished with Insignia white top surfaces, gloss white underneath; in line with early Canadian amphibians over the North Atlantic.
I'll see if I can find some color samples for you HTH