[LVL ED] Black&White screen effect possible?

[Mudbill]

How about writing the custom file, starting the mod, then destroying the file and place the original back in place as soon as the game has loaded it into its memory? Of course Windows might not allow you to do this if a program is using it, but it has to be possible in some ways, because I know files CAN be modified while running, therefore I think it's just an automated restriction to prevent corruption within Windows.

I kinda get the impression that restoring the file afterwards can fail in many cases if the task is shut down unexpectedly.