When I started Firefox today all background colors were gone as in the following screenshot:
This probably happened because I have set up automatic software updates, so something must have gotten broken.
What I've tried to no avail:
- start Firefox with
--safe-mode
to disable all plugins - rested GNOME color themes to Ubuntu's default
sudo apt-get update && sudo apt-get upgrade
. This upgraded from Firefox 36 to 37.
I had to do a "Firefox refresh", which seems to be a way to import old settings into a new version of Firefox. To do it go:
I suspect that the break was linked to:
If someone understands better, please edit this answer.