Hey Tankbuild. Now that you have narrowed down how you will weather the tank here is what I do when weathering a dusty tank (w/ alittle grim
)
First I give my tank a light misting spray of Tamiya Buff all over the tank, to blend in any camo and or markings. After I have dusted it I give the tank local washes/pinpoint washes (very thinned paint) of winser newton oil paints. The colors I usually use for that type of weathering are burst sienna, raw and burnt umber, vandike brown, and or mars black. I usually try to keep black washes to either recesess or the substructure. I have also used a technique described by MIG using pastels. Mix a good earth tone of ground down hard pastels and blend it into the base coat.
I forsee Shermanfreak given you some useful advice very shortly.