Has anyone used the blue filter wash for Panzer grey vehicles? What type of effect does blue have on this color?

I have both the wash and the filter but havent had the oppertunity to use it yet. You may have to thin the wash depending on your style but you will definetly have to thin the filter. Ut shiuld give yoyr grey a bluish hue. I beleive there is a review of the set in the review section

The Blue Filters are also usefull on many other colors besides Grey. I have used them to good effect and subtle effect over OD Green, 4BO Green, & the dark lower undersides of any hull as well. Also works nicely over Blue base colors like those found on P.T.O. Aircraft such as Corsair or Dauntless.