I created these wallpapers series to make it easier to recognize Plasma activities and/or virtual desktops. I hope they can help you in your work.
FLAT Develop Wallpapers can be used for activities related to development, web sites, coding, debug, database, etc. Available in five different colours.
Sizes: 1920x1080 - 16:9 and 1920x1200 - 16:10