Payload of the system:themeChanged event.
The colours of foobar2000's Default UI changed, dark mode included. Only pages in this plugin's Default UI panels receive it, together with ui:coloursChanged; Columns UI panels and the plugin's own windows do not.
Whether Default UI now uses its dark mode. It follows foobar2000's own setting, which can differ from the Windows app theme that system.getTheme reports.
Payload of the
system:themeChangedevent. The colours of foobar2000's Default UI changed, dark mode included. Only pages in this plugin's Default UI panels receive it, together withui:coloursChanged; Columns UI panels and the plugin's own windows do not.