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
* property is defined to not inherit. And style property won't be searched
	 * up the containment hierarchy if it'd defined to no inherit.
	 * <p>
	 * Part of: Property value system.
	 * 
	 * @param module
	 *            the module
	 * @param prop
	 *            definition of the property to get
	 * @return The property value, or null if no value is set.
	 */
	public Object getProperty( Module module, ElementPropertyDefn prop )
	{
		Object value = getPropertyExceptRomDefault( module, prop );
		if ( value != null )
			return value;
		return prop.getDefault( );
	}
	/**
	 * Gets a property value given its definition. This version does the
	 * property search with style reference, extends reference and containment.
	 * The default value style property defined in session is also searched, but
	 * the default value defined in ROM will not be returned.
	 * 
	 * @param module
	 *            the module
	 * @param prop
	 *            definition of the property to get
	 * @return The property value, or null if no value is set.
	 */