Interesting and discreet Tasks Buttons on the Panel in multiple colors (red, orange, green, teal). Menu Buttons in Teal color. Reduced transparency of the Panel as well as the start of the menu. This Thema, beautifully goes on dark and bright backgrounds.
This theme will install as dependencies:
Plasma Theme "Crown-Teal": Here
Plasma Color Scheme: "Crown-Teal-v.2": Here
Aurorae Theme: "Crown-Teal": Here
Icon Theme "Breeze Chameleon Dark": Here
The author of the wallpaper: charlie-henson: Here