Install Emerald and themes (Pack, hoverglass, Avalon) in Ubuntu 13.10 Saucy/13.04 Raring/12.10 Quantal/12.04 Precise/other Ubuntu derivatives

Emerald is a window decorator that allows for a wide variety of new looks to be added to application windows. Emerald project is a window decorator that provides the borders to your windows normally provided by Metacity or KWin. It is not required for Compiz to operate, however it allows for decorations to be edited or even created from scratch. For now, there are plenty of existing Emerald themes that can be downloaded and used first.
Using Compiz and Emerald together can produce some genuinely stunning-looking desktop environments, although it is still possible to install and use them separately.
Emerald manager allows you to add themes easily by import option, first you need to download themes then import via Emerald Manager. I added theme pack to PPA which contains approx 35 themes and two other theme sets Avalon-Dark-Light, Hoverglass that looks really great if used with matching Gtk themes.
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Note: For Ubuntu 13.04/and related derivatives installation commands scroll to the bottom, but you still need to follow compiz instructions.
It works only with compiz, so it only can work under Unity and Gnome-fallback(with compiz).

To install Emerald in Ubuntu open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:

After installation first of all open Emerald theme manager then install themes with this command:
Then open compiz setting manager from dash/menu or type 'ccsm' in terminal to open it.
Now go to 'Window Decoration'
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In the command field type emerald --replace & and just logout and login back.
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Now open Emerald Manager to import or choose theme
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Install Emerald and themes in Ubuntu 13.04 Raring or any other Ubuntu version use following commands:
That's it
Themes credit: HoverglassAvalon-DarkLight
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