hi Mark.
is it the same model as this?
http://www.scale-models.co.uk/showthread.php?t=4823
(well kind of)
here is a nice walk around of it:
http://superfighter.freeweb.hu/PARIS...VEL/index.html
it looks like a slightly lighter olive drab. just mix and match untill you have a shade that looks right on the model. remember model kits and their paint reflect light differently to the real thing so if your happy with the colour you come up with its all good!
Richard