the pictures I've seen the "yellow 6" white is veiled, is a great effect for a white finish very complicated but very effective I'll explain as I do:
"to that effect that look white but looks camouflage background is veiled, it is like going getting very thin veils on camouflage paint very diluted 70-80% or so, fast thin, even coat without much entertainment, like varnish, drying well and another layer until you have the finish you are looking for, so I did it for the LA-5 Merono in the winter of 1944"