Usually, in an ubuntu user's life there comes a time where they want to make their panels in the gnome desktop transparent. I have been through this 'stage' more than once.
I never really could figure out how to do this until probably about three months ago. So today I will show you how to make the gnome panel transparent, and look like this:
See how the panels are transparent?
Well, it's very easy to make them look like this. All you have to do is the following:
1) open a terminal, and type:
gksudo gedit usr/share/themes/Ambiance/gtk-2.0/gtkrc
2) once the file comes up, go to the line that reads bg_pixmap[NORMAL] = "panel_bg.png". I believe it is on line 250. I'm not exactly sure, you may want to check.
3) once you have done this, comment out the file. To do this, simply put a pound symbol in front of all of it.
4) And now, just save the file, and exit. To do this, either click the top-left option that says “file”, then click the save option, then exit. Or if you are a cool geek you can use keyboard shortcuts, which are “ctrl+s, ctrl+q”.
5) Goto one of your panels on your desktop. Right-click one of them, and select properties.
6) Then, click on the background tab, to the right of the one that says general :)
7) click on solid color, and select which transparency “level” you would like with the provided “slider”.
8) after you have made up your mind, etc., just log out, then log back in. your panels should now be transparent!
And that is it. Your panels are now transparent. Note that I used the Ambiance theme, which most users do now, because of the nice polished look. But if you do not use Ambiance, just replace it with whatever theme you are using.
For example, instead of navigating to usr/share/themes/Ambiance/gtk-2.0, you would go to usr/share/themes/AgingGorilla/gtk-2.0 or some other theme.
If you have trouble, let me know ;-)
Good luck, and have fun doing it!