My kvantum theme based on FlatBlur, which is based on Akava-Kv

A full black theme with bright blue accents and all of the background blur and transparency

Recommendation:
- use the BreezeBlureed window decorations: https://github.com/alex47/BreezeBlurred
- for best results make sure whatever plasma colorscheme you are using has black (#000000) set as the titlebar background
- for the transparent list view (e.g. the list view mode in Dolphin)you will need a more recent version of kvantum: https://github.com/tsujan/Kvantum/tree/master/Kvantum
I recommend compiling it yourself of if applicable use the AUR

Flatblur: https://www.pling.com/p/1326672
Akava-Kv: https://github.com/Akava-Design/Akava-Kv

Wallpaper in the screenshots: from a collection on reddit: https://www.reddit.com/r/TheExpanse/comments/cteld0/a_bunch_of_wallpapers_4480x1600px/