Backup diff of wxPython/Appearance (No. 1)

• Backup list
• View the diff current.
• View the diff for visual.
• View the source.
• View the backup.
• Go to wxPython/Appearance.
  • 1 (2023-11-15 (Wed) 00:00:32)

• The added line is THIS COLOR.
• The deleted line is THIS COLOR.

- How to react to dark mode change?
--  https://discuss.wxpython.org/t/how-to-react-to-dark-mode-change/35905

 def OnColourChanged(self, event):
     sys_appearance = wx.SystemSettings.GetAppearance()
     dark = sys_appearance.IsDark()
     print("dark = %s" % dark)