In the terminal preferences there is an option to make it transparent.
Now, in GNOME Classic with no effects (I think there is no Compiz), this option still exists. However, it is not true transparency: it just shows transparent terminal with wallpaper in the background but if we have any other windows open they will not appear behind the transparent terminal.
My question is this: without switching to Compiz, is it possible to get true transparency in GNOME Terminal?
(Enabling Compiz slows down my system a little bit which is why I don't want to use it.)