I know, stock theme and all of that, but did I tell you guys HOW MUCH I FUCKING LOVE this teeny tiny addition to KDE’s stock theme? I love this thing so much I made my entire system’s color palette around it. So there you go.
Tiling: Quarter Tiling (used Krönkhite for a while, preferred this);
Plasma theme: ChromeOS Dark;
Color scheme: Breeze-Dark-Red (my custom scheme);
Window decorations: Stock Breeze-Dark (but without the gradient on the top bar and shadows set to small instead of medium);
Icons: Papirus-Dark (Yaru color scheme with Papirus-Folders);