Full-Dark-Red for Xfce
With lightdm-gtk-greeter theme to be able to select Full-Dark-Red 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".
Added for Firefox the file userContent.css to be able to visualize the dark entries that resist the aforementioned extension (it causes the text to be displayed in red as well as some others whose background is already white).
Icon theme: Papirus Dark Red Folders.
Window headers font: Xolonium.
Tested and running on Manjaro Xfce.