I've found the profile I was looking for, in the Edward Shacklady Classic WWII Aviation Vol. 6 De Havilland Mosquito. Some nice photos in there, but terrible captions. It's coded XD-O VP195. As to how true that is... Never trust a profile without a photo but I know quite a few of the other profiles are sound.
There is one I'd like confirmed as real or bogus, as it's RS679 UP-A of 4 Sqn. Quite a common decal option, appearing on 3 sheets over the years. The profile has it in standard night fighter camouflage of Dark Green over Medium Sea Grey with Night undersides, which is what Microscale went with. Modeldecal and later Freightdog went with the other scheme of Medium Sea Grey uppers with Night underneath, of which there are at least two photos to back it up. I've quite a few photos of 4 Sqn aircraft but not UP-A in the scheme mentioned. It's quite possible it was, as the whole squadron was repainted in a hurry for some flypast/parade and they had issues getting the right paint, so some aircraft had darker grey uppers. Paul Lucas had an article on it on in one of the magazines some years back.