I used to enjoy Windows 7's colors. It was all so blue and azure, and I really miss it on latest upgrades.
I also miss it on KDE, and their similarities and beautiful design made me wonder: would it be good having a theme color like Windows 7 on KDE?
You will decide.
Also, since I'm a transparency %@#, I cannot stress enough that the best way to enjoy this theme is using also Breeze-blurred for Kwin (https://github.com/alex47/BreezeBlurred).
Hope you'll enjoy this theme!