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
ArrayList propMasks = (ArrayList) getLocalProperty( module,
				PROPERTY_MASKS_PROP );
		if ( propMasks != null )
		{
			ListIterator masks = propMasks.listIterator( );
			while ( masks.hasNext( ) )
			{
				PropertyMask mask = (PropertyMask) masks.next( );
				errors.addAll( mask.validate( module, this ) );
			}
		}
		return errors;
	}
	/**
	 * Checks all structures in the specific property whose type is structure
	 * list property type. This method is used for element semantic check. The
	 * error is kept in the report design's error list.
	 * 
	 * @param module
	 *            the module
	 * @param propName
	 *            the name of the structure list type
	 * @return the list of the errors found in validation, each of which is the
	 *         <code>SemanticException</code> object.
	 */
	protected List validateStructureList( Module module, String propName )
	{
		return StructureListValidator.getInstance( ).validate( module, this,
				propName );