Yes, thank you for that, and I am now good with LO.
Now I need to be able to easily switch back and forth between the standard Windows theme for MS Office (bright-white background + black text) for my wife and the Dark Mode skin for me. Tried the per-app-exclusion but it left the Dark Mode color scheme unchanged, no matter what I tried. So I gave up and uninstalled WindowBlinds but MS Office still displayed in the Dark Theme skin (I can't remember if that was also the case for the Windows desktop). So I had to go back to the previous Windows restore point I created before the installation, and all is back to normal now.
Now I find out that you have to use SkinStudio to disable the system-wide color scheme in addition to the per-app-exclusion? I really love the Dark Mode skin/theme for the desktop and for MS Office but is there a way to enable/disable it completely on the fly?
I haven't experimented with other apps and/or browsers to see if there are other issues so is there a clean way to uninstall WB without having to revert to a previous restore point?