Hi!
You should be able to install GNOME DE on Qubes OS dom0 with.
sudo qubes-dom0-update gnome-shell
Install extensions according to instructions here.
Install pop-shell@system76.com and run this:
sudo cp ~/.local/share/gnome-shell/extensions/pop-shell@system76.com/schemas/org.gnome.shell.extensions.pop-shell.gschema.xml /usr/share/glib-2.0/schemas/org.gnome.shell.extensions.pop-shell.gschema.xml && sudo glib-compile-schemas /usr/share/glib-2.0/schemas
Reload the shell with Alt + F2 and type r
. Use the tiling widget in the panel to enable active window hint.
Then run label.sh to enable colored window borders. Thanks to the kind people in the Qubes forum who helped me with the script.
Sorry, I did this quickly and forgot to add the link, it is there now. Pop shell is here and can be installed according to instructions for installing an extension from ZIP:
https://github.com/pop-os/shell/releases/tag/1.2.0