Taking screenshots of Archimedes games

I’ve been attempting to use !Snapper to take screenshots of Archimedes games, and while it works for some games that I’ve tried, some games result in screenshots with incorrect palettes (such as Lemmings), while other games have graphical corruption outside of the visible area (such as Chuck Rock). Is this something that can be fixed in Snapper, or is there another way of taking screenshots of the games that Snapper has trouble with?

Using an emulator will be the most reliable solution. I’m not sure what Chuck Rock does (maybe some weird border settings?), but I know that Lemmings makes use of mid-screen palette swaps, which is the kind of thing that standard screenshotting tools won’t be able to catch.