Is there a way to specify dark themes for the window decorator (Mutter) for just a single application? (Like Sublime Text).
For example, on the screenshot below one window is customized to have a dark decorator, others follow the system adwaita theme.
I'm successfully able to customize whole GTK3 applications. From window borders (Mutter) to the GTK3 theme itself. However, even when enforcing dark theme in all GNOME apps, GTK2 applications still appear with the classic white border. Is there a way to enforce a dark window border for non GTK3 apps?