Only changes theme but not light/dark color scheme

[disposableone]

The extension is great, but it does not change color themes. So it changes the color of the tabs and the color of the new tab page from light to dark, but it doesn't change the color scheme for website appearance (have to do it manually in Settings). That color scheme change is tied to Gnome's dark/light mode, but that has to be changed manually if used without extension for Gnome. Why won't this extension change color scheme too?