Bronze Green was used in three shades on prewar British armor, but was replaced with a medium brown (dubbed SCC 2) in 1942, as the chemicals needed to produce green pigments were in short supply. In 1944, a new color, SCC15 was introduced, which was nicknamed Khaki Drab or British Olive Drab because of its resmblance to the US shade (there was no official name, as the British authorities had decided that wartime paints should be known by number only). US-made equipment was normally left in American No. 9 Olive Drab, but rebuilt equipment (like the Firefly) had to be repainted using British paint stocks. Anyway, Humbrol makes a Khaki Drab, but it is a rather bright green so add a touch of brown to tone it down. If you're fussy, the MAFVA website suggests the following Humbrol mixes: Mix: 150+186+33 in ratio 20:6:5. or 159+33 in ratio
8:1. After the war, the British reverted to Bronze Green. Gerald Owens