How do you change the background colour in STM32CubeIDE?

[qua]

How do you change the background colour in source code editors? I have tried:

Window > Preferences > General > Appearance > Theme set to dark mode

Window > Preferences > General > Editors > Text Editors > Annotations has nothing for the background

Window > Preferences > C/C++ > Build > Console only affects the consoles

Window > Preferences > C/C++ > Editor > Syntax Colouring doesn't has a background option

Window > Preferences > C/C++ > Editor lets you set a background colour, and applying it works, but as soon as you close the preferences window the old settings comes back.

[qua]

Thanks AScha. Eclipse really is a rubbish IDE, I'm so glad so many companies decided to base their IDEs on it.

[qua]

Thanks, but this doesn't work. When I install the theme and restart it does not appear in the list of installed extensions, and it is not selectable as a theme.

[qua]

Thanks, this theme does seem to work.