[Comfy.n]

Originally Posted by kovidgoyal

Look in gui2/__init__.py

where QApplication is constructed and pass it the path to stylesheet with -stylesheet.

Well.. I see I need to use this:
https://doc.qt.io/qt-6/qapplication....tyleSheet-prop

Now how/where would I insert the path to a stylesheet in gui2/__init__.py?
In trying to guess, I found this in line 1090:

class Application(QApplication):

    shutdown_signal_received = pyqtSignal()
    palette_changed = pyqtSignal()

    def __init__(self, args=(), force_calibre_style=False, override_program_name=None, headless=False, color_prefs=gprefs, windows_app_uid=None):

then I tried this:

[...]color_prefs=gprefs, windows_app_uid=None, stylesheet=c:\x.qss):

Program wouldn't load... Then tried running "calibre.exe -stylesheet c:\x.qss", no good either

Also, looking in https://doc.qt.io/qt-6/stylesheet-syntax.html I'm not sure if the file should have .qss or .css extension. First thing I'd like to test is using a wildcard as in:

* -webkit-scrollbar-thumb {
  background-color: blue;    /* color of the scroll thumb */
  border-radius: 20px;       /* roundness of the scroll thumb */
  border: 3px solid orange;  /* creates padding around scroll thumb */
}

(reference: https://www.digitalocean.com/communi...css-scrollbars