This is three Bleuâtre color schemes starting from light to dark in that order.
There is also a Bleuâtre Plasma theme also that will match all three color schemes so you can have three different color schemes with one Plasma theme.
The plasma theme is transparent and it looks really good.
You may have to install the color schemes manually because there is three in a compressed folder so I don't know how that works because i have never once used the installer in the settings to install anything.
The original transparent plasma theme is here:
The icons in the screenshots are the Laferte-Blue icons that I made to work on KDE plasma and changed the colors and I also have several colors but I haven't posted them yet.
They are available at my github repo along with everything else and screenshots.