"SumatraPDF-settings.txt" cannot be changed.

[yahaha6]

I want to change the background color of the UI，and changed the value of "FixedPageUI.BackgroundColor" in "SumatraPDF-settings.txt" to #ff0000.The interface of SumatraPDF did not change. After the software is restarted, the "SumatraPDF-settings.txt" file changes to the default.

Why can't I successfully modify "SumatraPDF-settings.txt"?
Thank you!

[kjk]

You can change SumatraPDF-settings.txt.

2 things:

• BackgroundColor is for the background color of rendered documents MainWindowBackground is for the color of the window
• if sumatra restores the setting to default value, most likely you made a typo and entered incorrect value