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
* 
	 * @param element
	 *            The potential container.
	 * @return True if this element is contained in the container either
	 *         directly or indirectly. False if this element is not contained.
	 *         If the given element is this element itself, return true.
	 */
	public boolean isContentOf( DesignElement element )
	{
		DesignElement e = this;
		while ( e != null )
		{
			if ( e == element )
				return true;
			e = e.container;
		}
		return false;
	}
	/**
	 * Returns the value of a property as a number (BigDecimal).
	 * 
	 * @param module
	 *            the module
	 * @param propName
	 *            the name of the property to get
	 * @return the property as a BigDecimal, or null if the value is not set or
	 *         cannot convert to a number
	 */
	public BigDecimal getNumberProperty( Module module, String propName )
	{