[thiago.eec]

Originally Posted by jist

Thanks, I gave it a shot, and it's probably me, but I couldn't figure it out.
Also, I would like to be able to switch easily between light and dark mode. (daytime use vs. night time use)

For some software you can use a customized shortcut with some 'switch' code in it for such purposes.
Could that perhaps be achieved with Calibre too?

If your Windows is set to light mode, you can do this:

1) Create a new shortcut on you desktop and rename it to Calibre-Dark (or something like that);
2) Right-click it and go to Properties;
3) On the Properties window, edit the target to this:

C:\Windows\System32\cmd.exe /c SET CALIBRE_USE_DARK_PALETTE=1 && START calibre

4) Click on Change Icon and ponint it to: %ProgramFiles%\Calibre2\calibre.exe

Now, when you want to open calibre in light mode, just open as always (start menu, taskbar, etc). When you want dark mode, use this new shortcut.