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Theme Colours

There is probably a simple solution to this but I can't figure it out. How can I change the theme colour in the custom css? I'm trying to change the Frankfurt blue to a lighter colour blue.


  • As of a recent version, Zettlr makes use of so-called root-variables. The main colours are named --c-primary and --c-primary-shade (the version for the dark mode).

  • Thank you Hendrik.

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