Hy there, about the centralize problem, i added the feature on the mine using Godot (A few tweaks in the code) also i added an option button at the top left that changes the "UI" based on the mode selected
you can check it out here an if they are good then i would be happy if you add them to Pixelorama:
https://github.com/Variable-ind/Pixelorama/tree/Var-Transparentalize
(Side note: you can see the places where i made the changes in scripts by searching "by variable" in the "Find in files" section in Godot)