A theme is a pre-configured package of graphical looks and functionality features in computing. A theme is typically made up of a set of forms and colors for the graphical control components, window decoration, and windows. As Ubuntu also consists of a graphical user interface, it also has the option to change the themes primarily.
Here at Ibmi Media, we shall look into how to easily change the Ubuntu 21.10 Impish Indri Theme.
To Install and Use GNOME Shell Extensions in Linux, visit: https://linuxapt.com/blog/810-install-and-use-gnome-shell-extensions-in-linux
The Process of changing Ubuntu Theme
1. Install "GNOME Tweaks"
You must ensure that you have installed "Gnome Tweaks" because installing Gnome Tweaks is compulsory, no matter whether you only want to change the Ubuntu theme, the icons, or the cursor. This tool helps you quickly switch between different themes, icons, and cursors.
To install Gnome Tweaks, open your terminal and run the below-mentioned command:
$ sudo apt-get install gnome-tweaks
You can also install "GNOME Tweaks" by exploring it in Ubuntu Software and then by clicking on the "Install" button.
When you have successfully installed "Gnome Tweaks" on your Ubuntu, you are ready to install and change the themes, the icons, and the cursor.
2. Install Desired theme
To install themes in Ubuntu, you need to download "Ubuntu themes" from the internet browser.
You can search and download different themes using different browsers, but the one I have used in this case is "Gnome Look". Gnome Look includes not only themes but also all of the tools you'll need to personalize your Ubuntu interface. You can search for the "Gnome look" using the link https://www.gnome-look.org.
After going to the "Gnome Look" link, select the "GTK3/4 Themes" section, which is provided under the section of categories.
In the "GTK3/4 Themes" section, you'll find thousands of amazing themes. Choose a theme that appeals to you and download it. We went with the "Snow" Ubuntu theme, which is nice and cool.
After going to the snow theme, you can download the selected theme by clicking on the "download" button.
After clicking on the "Download" button, it will provide you with a dialogue box in which it will ask what you want to do with this file, i.e., open or save it.
3. Apply Selected Theme
After you've downloaded the selected theme, go to its file location and extract the file by right-clicking on it and selecting the "Extract here" option.
In our case, we extracted file of the "Snow" theme.
If you've extracted the downloaded theme, open your terminal and execute the following command (this will open 'Files' with root rights):
$ sudo nautilus
Now that you have root access to the files, navigate to 'usr/share/themes'.
After going to the location, drag and drop the extracted theme folder ("Snow" in my case) to the location "usr/share/themes". Hence, your theme is finally successfully installed,. Now you just need to apply it.
After the drag and drop situation, close all the open applications and open "Gnome Tweaks", then go to the "Appearance" section provided in the left sidebar, and choose the theme you've installed (Snow, in or case) in the application's row to apply it successfully.