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
DesignElement child = (DesignElement) derived.get( i );
			list.add( child );
			child.gatherDescendents( list );
		}
	}
	/**
	 * Checks if the element has defined any user properties. Checks only this
	 * element, not its parents.
	 * 
	 * @return True if the element has user properties, false if not.
	 */
	public boolean hasUserProperties( )
	{
		return userProperties != null && !userProperties.isEmpty( );
	}
	/**
	 * Checks if this element has any locally-defined property values.
	 * 
	 * @return True if the element has property values, false if not.
	 */
	public boolean hasLocalPropertyValues( )
	{
		return !propValues.isEmpty( );
	}
	/**
	 * Returns the container interface for this element if this element is a
	 * container. Derived classes that represent containers must override this.
	 * <p>
	 * Part of: Containment system.
	 *