A Boolean value that indicates whether the app should avoid using semitransparent backgrounds.
- macOS 10.10+
If this property is true, do not use semitransparent backgrounds in the user interface. For example, use only opaque windows.
Users can change this setting by choosing System Preferences > Accessibility > Display and selecting the “Reduce transparency” option. Listen to the
NSWorkspace notification to receive updates when this setting changes.