How to change colors and theme settings in 'Windows Store app' version of Arduino IDE? In the standard Windows (Win32) version of the Arduino IDE, theme settings like syntax coloring can be modified in C:\Program Files (x86)\Arduino\lib\theme\theme.txt.

For the Windows Store app version of the IDE the theme files are stored in protected app storage space.

Is there a simple/safe way to change theme settings for the Windows Store app version of the IDE without messing up security settings and inadvertently lowering Windows security?

(It would be easier and better if theme settings could be moved to the ArduinoData user folder where preferences.txt is stored.)
I think rrz0's answer skipped the part of the question:
"For the Windows Store app version of the IDE the theme files are stored in protected app storage space."

The only way is to take control of the windows app folder but I believe this is risky and M$ suggests that this can brick your pc (take that with a grain of salt).

There is an offline windows installer and zip link on the downloads page which I used to replace the windows store version. I see no advantage to the store version.