Customizing Looks and Feels

Install Gnome-Tweaks: sudo apt install gnome-tweaks

Verify the package: apt-cache policy gnome-tweaks

Launch Gnome Tweaks gnome-tweaks

Alternatively, Activities > Show Applications > Tweaks

Mess around..

Go to Extensions, enable User Themes

A good variety of themes can be found at: https://gnome-look.org

We can make the entire process easier with a FireFox plugin: GNOME Shell Integration

Open the Extension, Search and turn on: Coverflow Alt-Tab Applications Menu Extension List ArcMenu Dash to Dock MMOD Panel

Open Tweaks, if already open, reset.

Go to https://www.linux-apps.com/p/1136805/ and download the .deb.

sudo dpkg -i ocs-url3_.1.0-0ubuntu1_amd64.deb sudo apt-get install --fix-broken

Now you should be able to just hit the install button on the gnome-look site and they will be installed to .themes.

Reset Tweaks, and the skin should be available