TADAAAAAAA I made- well, sort of a rickroll. No, it's not 'scratch dark theme', BUT, I scratch looks dark. And this isn't a setting in scratch, all you have to do is (if you are allowed to) change the magnifier settings so it inverts the screen, open magnifier and change it's view to "full screen", and since scratch is light themed, it turns it dark themed!! Well, that's about it. This project will be moved to @cat_tap_RESHARING soon (i shared it here because I happened to be on here right now). So anyway, maybe you can use this if you want xD.