I like using mig's Natural wash, It's a dark grey black wash . Thin it out before using, I like to put it on in layers.
I also like AK's filters wash. The bottles tell you what vehicles to use them on, but I use them on all vehicles, sand,
grey, green, camo. Try them out, you can mix the washes and make your own.. when it comes to powders, mig or wilder
powders are good...