Install lubuntu-artwork-15-10 by entering the following commands in the terminal:
sudo apt update sudo apt install lubuntu-artwork-15-10
Description:
artwork for Lubuntu - 15.10 version
Artwork for Lubuntu, contained the wallpaper and others specific images and logos. . This package contains theme of Lubuntu 15.10.
Homepage: https://launchpad.net/~lubuntu-desktop
Version: 0.71
Section: universe/x11