Some Apps (QT based) are in Dark Mode and Text is unreadable

I have several apps (Picard and Calibre are examples) which seem ‘stuck’ in dark mode and the text is unreadable as it’s black on black.

It doesn’t seem to make any difference which theme I apply, I’ve tried…

  • Adwaita
  • Adwaita-maia
  • Matcha-sea (my usual)
  • Matcha-light-sea
  • Matcha-dark-sea

It doesn’t seem to change these apps. The heading changes to reflect the theme but the underlying colours don’t change.

They don’t have a Gnome like interface so I assume they don’t use GTK.

My question is - How can I make these apps readable?

I found a fix for readability elsewhere. These apps are all QT based.

echo "export QT_STYLE_OVERRIDE=Adwaita-Dark" >> ~/.profile

Applies the adwaita-qt package to the apps.

I had the package installed already - whether it is part of the OS package set or was a dependency from something else I do not know, but it is listed in the AUR if anyone drops here with a similar problem.

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