[Addon] Simple Panel Setup

[Zmgclt]

Hey guys, I'm looking into a simple black rectangle panel I can install to backfill my action bars. I would also like to ask, is it hard to set these up? Does it take much memory? Are there light alternatives of these?

A screenshot of my UI: http://imageshack.us/photo/my-images...111001410.jpg/

Oh, also, I know you are are addon experts - I'd like any suggestions you have to improve my Ui, it would be greatly appreciated!

Thanks in advance!