I'd like to have a visual marker that is impossible to miss to show when I am viewing a file under a particular directory. Just having the path in the modeline is not enough to avoid confusion sometimes.
For example, if I use
git worktree and am viewing two versions of the same file from different worktrees, I need to avoid confusion.
I'd like to have the background color set slightly differently based on the filepath - I'd be fine setting it manually.
I don't see a way to have the color different on a per-buffer basis, is there a way?