I feel like the red cross logo in games is a staple (even if it's technically wrong).
Pffft, red, green, it's arbitrary. Like sometimes I'll watch old let's plays of Subnautica, and notice that in early access it used a red cross symbol on the health kit replicator, whereas the release version uses a green cross. Since I never played the early access version, the red symbol looks weird and wrong to me. It's whatever you're used to.
As for this mod, yes this is simultaneously the silliest and most serious mod I've ever made, and that absurdity appealed to me. Silliest because all it does is slightly modify the texture and icon for a single object, yet most serious because this is something that companies have actually been sued over.
Also I couldn't resist the notion of a "Geneva Conventions Compliance" mod. How posh.