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
assert base.getDefn( ) == getDefn( );
			
			assert base.getName( ) != null;
			String namespace = null;
			Module root = base.getRoot( );
			if ( root instanceof Library )
			{
				namespace = ( (Library) root ).getNamespace( );
			}
			extendsRef = new ElementRefValue( namespace, base );
			base.addDerived( this );
		}
	}
	/**
	 * Returns the data set element, if any, for this element.
	 * 
	 * @param module
	 *            the module of this element
	 * 
	 * @return the data set element defined on this specific element
	 */
	public TemplateParameterDefinition getTemplateParameterElement(
			Module module )
	{
		ElementRefValue templateParam = (ElementRefValue) getProperty( module,
				REF_TEMPLATE_PARAMETER_PROP );
		if ( templateParam == null )
			return null;
		return (TemplateParameterDefinition) templateParam.getElement( );
	}