Lubuntu 21.10 is installed on two systems and have installed the Thunderbird Snap on both. I have also installed the Chromium Snap.
When I click one of the account titles in Thunderbird, it highlights blue on one system and orange on the other. Both Thunderbird installs are using the default System theme in the Preferences.
I would like to know where it’s pulling these colors from and can they be changed? The dependency (?) Snaps also installed are the same on both systems, with one exception on the ‘blue’ system, it additionally shows the gnome-3-34-1804 Snap installed.
I attempted to get help via Usenet, without success. They keep asking about a GTK theme and I really have no idea where to look. The only reference to this I can find, is in the LXQt Appearance Configuration/Widget Style and they’re set to the same themes on both systems (GTK2=Arc-Lighter, GTK3=Arc-Darker). Mentioned this, but didn’t get anywhere…
The Wikipedia article on Snap packages indicates that because they’re sandboxed, they cannot access the system theme. There is a Snap package gtk-common-themes that apparently installed automatically with either Thunderbird or Chromium (the other Snap I installed), but there doesn’t seem to be a way to access this to see what particular theme Thunderbird is using.
If I have to live with the blue and orange, I will, but would like to change the color to something else.
Thanks in advance.