Simple hack to tinting/theming Libadwaita GTK4 apps in KDE Plasma

Thanks for your reply. I mean the window shades of my dark theme.
(The UI elements inside the windows, I think they all have dark shades. Not thought about theming them until now, actually might try it).

I’m using wallpaper slideshows and Now with plasmoid - KDE Material You color schemes generator from wallpaper luisbocanegra’s widget to create colors too, on 5.27.12

On the left, the ones I want the windows’ outline to be whitish shaded as well.