Bug 313459 Problem with % when generating images in tables.
See the attached BirtProject, it has two reports. Each identical except for this difference: The image width/height is set to a %age value (50%) in one (TestImage.rptdesign) and not-set in the other (TestImageWorking.rptdesign). TestImage.rptdesign does not display the image in pdf, but works fine in html. TestImageWorking.rptdesign shows the image in both pdf and html. The %age setting seems to cause the problem in pdf format.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/util/PropertyUtil.java
* @param color
	 *            CSSValue converted string.
	 * @return java.awt.Color
	 */
	public static Color getColor( String color )
	{
		if ( color == null || color.length( ) == 0 )
		{
			return null;
		}
		if ( color.charAt( 0 ) == '#' )
			return hexToColor( color );
		else if ( color.equalsIgnoreCase( "Black" ) )
			return Color.black;
		else if ( color.equalsIgnoreCase( "Gray" ) )
			return Color.gray;
		else if ( color.equalsIgnoreCase( "White" ) )
			return Color.white;
		else if ( color.equalsIgnoreCase( "Red" ) )
			return Color.red;
		else if ( color.equalsIgnoreCase( "Green" ) )
			return Color.green;
		else if ( color.equalsIgnoreCase( "Yellow" ) )
			return Color.yellow;
		else if ( color.equalsIgnoreCase( "Blue" ) )
			return Color.blue;
		else if ( color.equalsIgnoreCase( "Teal" ) )
			return hexToColor( "#008080" );
		else if ( color.equalsIgnoreCase( "Aqua" ) )
			return hexToColor( "#00FFFF" );