A visit to my LMS revealed a "British production" pot of Humbrol 78 Cockpit Grey Green. Curious as ever, I bought one to see what this incarnation of the colour looked like.
The touchstone, as always, is the RAF Museum colour chip set and compared to this the new Humbrol paint is a bit too dark and green:
It actually looks a bit olive. I couldn't identify any useful visual matches against the standards I had to hand, BS381, RAL, FS595 and BS4800.
Against my most up to date acrylic pot, new style but marked "Made in China", the difference is marked:
The acrylic is a bit too dark compared to the RAFM chip but doesn't seem to have as much yellow in it. It's probably useful for most requirements, even if you might want to add a touch of light grey:
It's a bit lighted in real life than it looks here.
Compared to my BS381c 283 the acrylic is close:
It probably falls around *4226 and *4227 in FS595.
Curious! I'll have a rake through the paint box and see what else I have that purports to match this colour.
John