Hi Mike - I use Equipment Enamel 304 with a satin finish.
Re. BSC 381 #222 Light bronze green, I could only find No.22 B.S.381 Light Green attributed to 1930. This colour is the same as model paint Humbrol 80 or E 5973 Model-Master if you need a sample.
I have posted this before, but I source this information from
http://www.miniatures.de/html/int/colourBS.html
&
http://www.miniatures.de/html/int/camouflageB.html
Bob