Roel, I know the wood looks light, but the colors are visually to me somewhat darker than pictures that I based the color off of. Also, I wanted them to be lightly colored just to add variation of color to the tank. IF you you go to the following you will see what I mean
http://www.panzer-modell.de/referenz/in_detail/leo2a6/Bild_017.jpgThe dust is just very diluted Tamiya Buff misted on and the streaks are the same just sprayed in narrow paths over and over. Also the fading of the individual base colors may also add to the dust look, which was done by adding either yellow-green to the NATO green or buff to the brown and light grey to the black.
The intial wash was a general wash of humborl brown mixed with balck~50/50. the deep wash was pin washed into the panels and mostly black with a bit of burnt umber.
Thanks,
Sean