For some reason the color I prefer as a background for documents (Blue 5) was eliminated in a recent update of L.O. I eventually found my way to an extension (L.O. 5.2 Color Palette), installed it, and - voila - my blue was back. Then something odd happened: My Windows 10 laptop didn’t awaken from sleep mode one day, and when I did a cold reboot, various customized settings for L.O. had disappeared; I had to tweak it from scratch. Among other things, this meant that my preferred color was gone, so I thought I’d have to reinstall the extension. But the extension was still there. It’s just that now Blue 5 wasn’t among the options - which I assume means that L.O. is no longer able to access the extension and serve up its additional colors. I tried uninstalling and reinstalling the extension, and restarting L.O. No help.