I'm just can't decide if I like my terminals to be half transparent or to have random background pictures. If anyone is interested in the trick of having pseudo random background images for each new terminal, this is how I do it:
mkdir ~/.backgrounds.JPG to bright pictures, .jpg to dark ones. The pictures from the Debian package propaganda-debian are nice for this task./bin/bash -c 'pixx=(~/.backgrounds/*); state=`cat ~/.backgrounds.state`; test -f "$pixx[$state]" || state=0; echo $pixx[$state]|grep ".jpg" &;&; no=no; echo $[$state+1]>~/.backgrounds.state; exec /usr/bin/multi-gnome-terminal --use-factory --start-factory-server --tclass=Flat --pixmap=$pixx[$state] --$noshaded'From now on every window will have a different background. Eye candy! With little modifications this oneliner will also work with other terminal emulators like Gnome Terminal, ETerm, and others.