Having a transparent and clear panel makes your desktop more beautiful and stylish. Moreover you can have the desktop wallpaper fully or partial visible by adjusting the transparency. Getting a transparent panel is very simple and it takes just 2 steps.
Just follow the below steps to get a Transparent Panel in Ubuntu 11.04 Natty Narwhal.
Step 1: Press Alt + F2, the type about:config in the run window and press enter.
Step 2: Go to Experimental tab and the change the Panel Opacity value (1 makes the panel opaque and 0 fully transparent)
That wasn’t tough, well now you have a transparent panel