I recently installed Zorin OS and the dark mode has worked very well in almost everything the only exception so far has been google chrome in flatpak that although it has a large part worked in dark mode there are some sites, extensions and settings that have the light mode.
I was looking for some commands and found this one that runs dark mode but it is only temporary until I close the terminal.
flatpak run com.google.Chrome --enable-features=WebUIDarkMode --force-dark-mode
this was the result
and this is without using the command
I tried to modify the file com.google.Chrome.desktop but I could not get it to work maybe I'm putting bad, this is the result of the file that should be modified
Exec=/usr/bin/flatpak run --branch=stable --arch=x86_64 --command=/app/bin/chrome --file-forwarding com.google.Chrome @@u %U @@