Carbon for Xfce
With lightdm-gtk-greeter theme to be able to select Carbon as login theme.
You can place the window buttons left or right by the Window Manager.
Required extension for Firefox entries: "Text Contrast for Dark Themes".
Icon theme: Papirus Dark
Window headers font: Xolonium.
Tested and running on Manjaro Xfce.
April 8, 2019