Hey guys, avid Jellyfin user here. I’m suffering a problem in ZimaOS jellyfin 10.11.6. I’ve installed and configured everything to my liking even with some plugins that makes the experience better. My thing is for the life of me I cannot get any theme to work. Backdrops doesn’t work on home screen and only does so in movies tab, only login screen and maybe some cosmetics change but it doesn’t change into the full theme. I can see five themes in the display section, light, dark, hazel, apple, etc. no matter how much I install or reinstall different versions of Jellyfin it still doesn’t show my theme.
This is a Jellyfin limitation, not a ZimaOS issue.
In Jellyfin 10.11.x, themes are not full UI skins. What you’re seeing is expected behavior.
- Themes only affect limited UI elements
Mainly the login screen, some colors, and minor layout details. - Home screen backdrops are not theme-driven
Backdrops usually only appear correctly inside Movies or Series views, not on the main Home dashboard. - Full theme support does not exist in 10.11
Jellyfin does not currently support complete UI/CSS theming without custom modifications.
Things you can verify, but they usually won’t change the outcome:
- Clear browser cache or test in a private window
- Test using the web UI (mobile/TV apps ignore most theme changes)
- Disable any reverse proxy caching if used
- Restart the Jellyfin container after changing themes
Conclusion:
You’re not misconfigured, and reinstalling Jellyfin won’t fix this.
Full theming is a known Jellyfin limitation and is still an open feature request.
Custom CSS plugins are the only workaround, and even they cannot fully theme the Home screen.
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Wow, thanks very much for your reply, saved me the extra headache. I appreciate it.