SCUMM:Remaining original GUI problems

[GermanTribun]

System: Windows 10 x64
ScummVM: Newest 2.7.0git

Testing the implementation of the original GUI elements, which were claimed to be finished, I did notice several remaining problems, which are all located in older SCUMM games.

Maniac Mansion:
-The original GUI ist not implemented at all in the Atari ST version of the game.
-Additionally in the Atari version, the original cursor (Screenshot from an emulator added) is not implemented (and thus also not the Atari-version of the snail).

Zak:
-The original GUI ist not implemented at all in the Atari ST version of the game.
-Additionally in the Atari version, the original cursor (Screenshot from an emulator added) is not implemented (and thus also not the Atari-version of the snail).
-In the C64 version, the cursor for some reason also cycles through orange and yellow (Screenshot added), which is wrong (it doesn't happen in Maniac). Also, the sail is not white but dark gray (which also was correctly implemented in Maniac).
-In the FM-Towns version, the prompt when quitting the game is English, even though I use the German version.

Indy 3:
-When quitting the game, the prompt is in English, even though I played the German VGA version. (Screenshot added)

Loom:
-In the FM-Towns version, the German Version's quit prompt is a bit weird, in that pressing J or N does nothing, but return or Esc does. Additionally, J is alread pre-selcted. (Screenshot added) The EGA version has the prompt function properly.