I have eOS 6 Odin installed. On Windows I have the auto switch for dark and light themes. Along with this, all the apps that have option for switching between themes also changing their themes accordingly to the system-wide theme.
On eOS we have similar - theme is changing on schedule. But the same apps just know nothing about current system theme state (theme is changing on schedule).
My question: what parameter do applications look at to change their theme (in which file)?