Dark GTK-3 Theme
GTK-2/3 Theme based on the "Breeze-Dark" GTK Theme, Adapted for Plasma Theme Breeze-Splendent , which you can download: Here
The theme was tested on KDE Plasma 5.17, for GTK applications in Plasma.
Link to Wallpaper KDE Plasma Scenery 194 HD 4K Remastered : Here
Link to Wallpaper Starry Nebula 194 4K Wallpaper : Here
Link to Wallpaper KDE Plasma Nebula 273 HD Multiple Colors : Here
Author Wallpapers: Charlie-Henson