Mixing a touch of Mr Paint into Aqueous Mr Color to see if they get along nicely I noticed a bit of pigment fall-out. Not exactly good news, but I fiddled around a bit more and... turns out that was something the MRC did on its own, and sufficient amounts of MRP (the Chernobyl hot solvent they base it on specifically I imagine) seems to fix.
>>7807632I'll have to admit defeat on the "not buried under a pile of bricks" part. Shame about the lack of Cuba, the way they paint their aircraft I'm sure they'd have figured out something peculiar for their tanks as well. The leats conventional I found while taking some (but not tankathlon-sized) liberties with your demands was this Armenian scheme.