Hi !
If you were wondering how the level images (like this background) were generated, I found the lua script I used back when Dziak was speedrunning it when tidying up my drives.
Here is the gist : https://gist.github.com/orion78fr/95092b7168ba327bc1bfa38fbb241302
Here are the jpegs generated : https://drive.google.com/drive/u/0/folders/0B6POsibn0_12NEtZMTZtZGhzOXc
I don't remember why but colors are swapped. You can fix this with gimp with color mixing : https://imgur.com/a/TUDlcAB
There are glitches in some images because in pause mode background animations are still running, I didn't find a way to pause them too back then.
Have fun !
The images are great! I took the liberty and corrected all the channels in all the images:
https://drive.google.com/drive/folders/1Gy_o4ENsg2lqYbRS6UKHy1YYLs5zU6JI