

perfectly straightforward; you just reverse it. don’t think about it too hard. R G and B values each go from 0 to 255 (that’s 256 if you want to be a barbarian and avoid zero indexing).
all is well. you don’t need to think about it any more than that.
see, I would argue that killing them isn’t the best thing to do. death makes bodies easy to cover with a coffin, easy to valorize, easy to homogenize and erase. death makes it easy to tell glorious lies. you ever seen a military cemetary? they don’t list birth/death dates, don’t let you know that this is a field of dead kids. they’re soldiers now. everything else that was lost is erased.
living broken bodies are a lot less politically convenient. they don’t put VA hospitals in propaganda war films.
that said, killing nazis will never not be cool, even if I am right, which I may not be, and it is not an optimal strategy.