SUMMARY STEPS TO REPRODUCE 1. activate plasma-integration in plasma 2. install plasma-integration addon in firefox 3. startup firefox OBSERVED RESULT Firefox ui colors are different from plasma system colors EXPECTED RESULT Firefox "listens" to plasma and adapts to system colors SOFTWARE/OS VERSIONS Linux/KDE Plasma: (available in About System) KDE Plasma Version: 5.14.3 KDE Frameworks Version: 5.52.0 Qt Version: 5.11.2 ADDITIONAL INFORMATION They are doing a good job at mozilla with firefox. Only it is such a shame that it looks like a "stranger" in my kde environment. It doesn't at all adapt to the system color scheme. It makes me sad.
This is Firefox' task to do, not ours. There's also no API to style the browser from an extension, this can only be done from themes.
To bad. But thank you for your reply!
It just occurred to me: perhaps one could cheat and use Mozilla's own "firefox color" addon https://color.firefox.com/ . It is still "experimental" as they say. It doesn't color the search box highlights and the scroll bar handle. But perhaps when that arrives it is possible to use the code in the plasma-browser-integration. It's just a thought...