How To Change The GTK, Icon Or GNOME Shell Theme In GNOME

I plan to write about themes from time to time so I thought it would be a good idea to start with an article explaining how to change the theme, so it's clear for everyone. I'll start with GNOME, and maybe expand this later on.

To be able to change the GTK and icon themes in GNOME (Shell), you'll need to install an application called Tweaks (a while back it was called GNOME Tweak Tool). The application should be available in your Linux distribution repositories, so simply search for it and install it.

In Debian (Sid or newer) and Ubuntu (18.04 and newer), install Tweaks by using the following command:

sudo apt install gnome-tweaks

For older Debian and Ubuntu versions, install GNOME Tweaks Tool using the command below:

sudo apt install gnome-tweak-tool

At this point, you'll be able to change the GTK and icon themes using the Tweaks application, on the Appearance tab:

GNOME Tweaks change theme

To be able to change the GNOME Shell theme, you'll need the User Theme GNOME Shell extension. To install this in Ubuntu or Debian, use the following command:

sudo apt install gnome-shell-extensions

After installing it, restart GNOME Shell by pressing Alt + F2, then type r and press Enter.

Next, open the Tweaks app and enable the User themes extension:

GNOME Tweaks User theme extension

Now you should be able to change the GNOME Shell theme:

GNOME Tweaks change shell theme

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