Install Compiz , Then follow these instructions
How to make panels FULLY transparent? - Ubuntu Forums
[ubuntu] [SOLVED] How to make panel bar be semi-transparent - Ubuntu Forums
---------- Post added at 11:38 AM ---------- Previous post was at 11:10 AM ----------
After searching,experimenting for a day ,Here is the result
http://img219.imageshack.us/i/customm.png/
How to make panels FULLY transparent? - Ubuntu Forums
[ubuntu] [SOLVED] How to make panel bar be semi-transparent - Ubuntu Forums
---------- Post added at 11:38 AM ---------- Previous post was at 11:10 AM ----------
After searching,experimenting for a day ,Here is the result
http://img219.imageshack.us/i/customm.png/