I believe this is the creator of the “extra” footage: https://www.youtube.com/watch?v=LmOPXhFensg
His goal is to “complete” it this Decemeber.
As for your edit, you made some good choices and I do agree that the coloring will need to be corrected. Maybe the “completed” video rendering will match the colors better as well as fill in some gaps, mainly the background.