"This tutorial will explain how to create a Transparent Terminal
in Gnome Background using alltray.
"With AllTray you can dock any application with no native tray
icon (like Evolution, Thunderbird, Terminals) into the system tray.
A high-light feature is that a click on the 'close' button will
minimize back to system tray. It works well with Gnome, KDE, XFCE
4*, Fluxbox* and WindowMaker..."