Maybe they are "dark green fritillary", I can't really tell the difference.
@cmdr_amarao If one is not a butterfly expert then certainly! I'm not even sure if the ones in my pictures are both the same kind.
@wim_v12e Of course. I was trying to joke around palette swaps and bijective maps.
@cmdr_amarao I actually wondered about that. I'm not even sure to what extent the patterns and colours differ across individuals, let alone species. But it looks like you should be able to establish some kind of approximate equivalence.
@wim_v12e well, one could argue they're equivalent (?)