I have spent the better part of 3 days changing the colors of the Caineville theme to make it easier on the eyes and nicer to my taste. I wouldn’t like to go through all this again should something happen. How do I save my changes? Is there some file/directory I have to create/edit/rename to achieve this?
there you’ll find a file named along “my-colors-ardour.colors”
If you want to go further and have it in the rolling themes selector complete the header line (ex below) of that file and move it to the ~/.config/ardour8/themes directory (you may have to create it)
So I am not a big one on themes so staying out of that, but the above suggests you are running Ardour as root? I would generally suggest you not do that, you would need to set up your machine properly for a standard user to have the needed permissions, so it is a bit more work in many cases (Unless you use a distro set up already for this part, like AVLinux) but a much more secure way to oeprate your system.