Bug 122687 Libraries dont appear to allow background colors on tables to be used
If I create a table and set the background color to blue in my library and then drag the table from the library to the report the background color does not go with it.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/DesignElement.java
if ( oldRef != null )
		{
			target = oldRef.getTargetElement( );
			if ( target != null )
				target.dropClient( this );
		}
		
		
		
		if ( newRef != null )
		{
			target = newRef.getTargetElement( );
			if ( target != null )
				target.addClient( this, prop.getName( ) );
		}
	}
	/**
	 * Implements to cache a back-pointer from a referenced structure. This
	 * element has a structure reference property that can point to another
	 * "referencable" structure. To maintain semantic consistency, the
	 * referenced structure maintains a list of "clients" that identifies the
	 * elements that refer to it. The client list is used when the target
	 * structure changes names or is deleted. In these cases, the change
	 * automatically updates the clients as well.
	 * <p>
	 * References can be in two states: resovled and unresolved. An unresolved
	 * reference is just a name, but the system has not yet identified the
	 * target structure, or if a target even exists. A resolved reference caches