The "Discord Dark" theme is excellent and extremely easy to install. (There's a oneliner available)
What about this workaround?
Dark mode PBS
https://github.com/Luckyvb/PBSDiscordDark
Installation (as root)
The installation is done via the CLI utility. Run the following commands on the PVE node serving the Web UI:
wget https://raw.githubusercontent.com/Luckyvb/PBSDiscordDark/master/PBSDiscordDark.sh
bash PBSDiscordDark.sh install
Or this oneliner
bash <(curl -s https://raw.githubusercontent.com/Luckyvb/PBSDiscordDark/master/PBSDiscordDark.sh ) install
Uninstallation
To uninstall the theme, simply run the utility with the uninstall command.
I'm afraid this too stopped working for the latest proxmox version 7.3What about this workaround?
Dark mode PBS
https://github.com/Luckyvb/PBSDiscordDark
Installation (as root)
The installation is done via the CLI utility. Run the following commands on the PVE node serving the Web UI:
wget https://raw.githubusercontent.com/Luckyvb/PBSDiscordDark/master/PBSDiscordDark.sh
bash PBSDiscordDark.sh install
Or this oneliner
bash <(curl -s https://raw.githubusercontent.com/Luckyvb/PBSDiscordDark/master/PBSDiscordDark.sh ) install
Uninstallation
To uninstall the theme, simply run the utility with the uninstall command.