Australian Olive Green is darker than its american equivalent not because our forests are darker, but because it is more useful for an artist to have a drab forest color that is darker since it is generally better and easier to lighten a color than to darken it. To get a color more like the military olive simply add a little Yellow Oxide to the Australian Olive Green.
Chemical Description: Phthalocyanine green, Diarylide yellow, synthetic Iron oxide & amorphous carbon
Pigment Numbers: PG7 PY83 PR101 PBk7
Lightfastness Rating: ASTM I
Pigment Opacity: Transparent
Paint Opacity: Transparent