The KDE Plasma desktop uses the "Breeze" style by default. The translated meaning of "Adflatus" is "breath" or "breeze". I use it as "boring" default color scheme for my KDE setup. It is basically a forked Breeze theme with some adaptations.
When I developed Adflatus, I wanted it to function similarily to how "Material You" behaves. It's supposed to be good looking under all conditions, no matter which dominant color you prefer. It especially shines with the "Choose accent color based on wallpaper"-function.
Link in KDE-Store: https://store.kde.org/p/2124486
I made two variants for now. One poster child, one for accessibility.
Default It's better looking, with lower contrasts and an uniform background. It's more modern, but not as easy on the eyes.
Higher contrast This one has increased contrasts and easier accessibility, on the cost of some minor aesthetic drawbacks. For example, I couldn't make the title bar "flat", because if I did, the contrast in the list view would have gone missing.
Light Light theme, that doesn't burn your eyes. More greyish than other light styles, but just as adaptive as the dark version.
"Normal" accent color -> how it might look realistically, pastel colors prefered
Showcase with extreme color:
Realistic (pastel)
Extreme
Wallpapers used: My sky photo repository Application style: Lightly Plasma