Blue Radience, backdrops on, episode pictures for "next up" set globally?

[Hostile_18]

Hi all. I've looked for quite a bit and I can seem to find options to set the Blue Radiance theme and backdrops on as default globally? Also looking for individual episode pictures to be used for the next up/continue watching in the same way.

I know I can do it all on a individual user level and per device, but I would like it in the global custom css for all users, across all devices. 

Is there any way to do this? I'm using Unraid, if that makes things more difficult (i.e I can't find the Blue Radiance CSS anywhere to copy in etc).

Any help would be much appreciated.

[Hostile_18]

Slight update, I managed to extract the Blue Radiance CSS with the thanks to Chat GPT. I can now set it globally for all users, only problem is the Jellyfin logo and the Background (when backdrops are disabled don't show up. Presumably because it can't access the art assets, so the next step is trying to find them and upload them somewhere. One step closer!

Edit All done, final hurdle left is forcing backdrops on for everyone. Wish it was a server setting =)