Plasma themes based on the popular GTK theme Adwaita
The screenshots will seem blurry unless you click them and enlarge to get a better view of the theme.
The theme with the name Adwaita KDE transparent is more transparent than the the other. The normal Adwaita-KDE theme has the same transparency as Breeze while the other has more.
The icons are here:
The color schemes are here:
I use Charlie Henson's wallpapers here:
The theme has three wallpapers with so that is why you have different wallpapers in the screenshots.
This theme is loosely based on the GTK theme the Adwaita theme.