Install fvwm-icons by entering the following commands in the terminal:
sudo apt update sudo apt install fvwm-icons
Description:
icon *.xpm files from fvwm development site
This package contains small icons for use with window manager menus. The icons include generic symbols (balls, books, hexagons) and descriptive icons for programs (file manager, netscape logo etc.). Note, that these icons are quite basic and do not include any shadow effects. . Originally the icons were for FVWM which is a small memory footprint ICCCM2 compliant multiple virtual desktop window manager.
Homepage: https://fvwm.org/download/icons.php
Version: 20070101-4
Section: universe/x11