[ubuntu] Unity Launcher Background

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http://ubuntuforums.org – I found a way to make the icon backgrounds transparent for the Unity Launcher by changing the files under /usr/share/unity/4 Does anyone know how to make the background transparent for the dock itself? I already made it transparent under Compiz, but I want to remove the line that separates the dock from the desktop. If anything, I just want to make it look like the icons are floating. (Hardware)