This is the GTK theme to match the Pitch Black plasma theme and color scheme. I also have made some window decorations for it but I am partial to Breeze. I am in the process of posting it all now. The entire theme has been rebuilt so give it a try. it now has transparency and blur in the Plasma theme.

Pitch Black color scheme
https://www.pling.com/p/1298939

Plasma theme
https://www.pling.com/p/1298943

Newaita icons
https://www.pling.com/p/1243493