Install branding-ubuntu by entering the following commands in the terminal:
sudo apt update sudo apt install branding-ubuntu
Description:
Replacement artwork with Ubuntu branding
The branding-ubuntu package is a series of replacement artworks for packages to make them more Ubuntu specific and fit in with the overall theme. Removal of the branding package should cause branded applications to fall back to their default artwork.
Homepage: https://wiki.ubuntu.com/branding
Version: 0.10
Section: graphics