Yeah, maybe a flat white, darkened just a touch so it's not so bright.
I don't know much about whitewash on aircraft, but the whitewash snow camo on the armor was usually applied quite haphazardly with brushes, mops, brooms, or whatever they could use to transfer the paint. You don't have to worry about brush marks, for sure!
Also, that paint was usually poorly thinned with water, gasoline, or whatever, so the adhesion wasn't great, and it easily wore off and became shabby in no time.
What aircraft or armored vehicle are you gonna do?