One of Linux desktop's most prolific — not to mention best, imo — theme makers has released a brand new GTK theme for us all to go gaga over: Nephrite.
For a quick and easy (if slightly resource intensive) way t get transparent blurred app windows on Ubuntu 21.10 check out this GNOME extension.
We spotlight 5 GTK themes for Ubuntu and other Linux desktops created by Vinceliuice, a prolific open source theme designer based in China.