This has been my setup for the last few months.
The animated wallpapers are displayed by Paperview (+ my pull request so it could be made to work with picom). I took gifs from various sources, converted them to collections of BMP files with ffmpeg, removed artist signatures (sorry) by copying parts of the images over themselves with ImageMagick, and integer scaled them if necessary.
Since I mostly live in Emacs (config), system information is shown in its tab bar instead of the top panel (which is tint2).
All the icons in the tab bar are simple XBM icons I made, and some (like the volume icon) actually change dynamically.
The current playing song description resizes according to the space left in the tab bar, and cycles if necessary.
CWM is also customized to add click-to-focus (but not raise) and remove some stuff I don't like.
Theme switching is handled by a hacky Perl script, which utilizes xsettingsd to switch the GTK theme and Qt5CT to change the Qt theme. I won't share it since it is extremely specific to my setup (and it's the first Perl script I ever wrote so it probably sucks).
The open Mumble window is only there to demonstrate Qt theme switching (which is pretty slow unfortunately).
I use Papirus icons, Posy cursor icons, the dark theme that comes with Qt5CT and Adwaita, and a combination of PragmataPro, Iosevka and Noto as my fonts.
My dotfiles are in a private repo since they contain a some sensitive information, sorry.
And yes, I recorded this at 3 AM.
What coup are you referring to?
I have never heard of this, and hours of research turned up nothing.