Bug 315366 "Auto" for Curve Fitting Line is not black but transparent
Description: "Auto" for Curve Fitting Line is not black but transparent. Build number: 2.6.0.v20100602-0949 Steps to reproduce: 1. New a chart, in Format Chart->Series->Value (Y) Series, tick "Shown Curve Fitting Line", click "Curve Fitting Line" button. 2. Select "Auto" for Color. Expected result: The line is shown with color black. Actual result: The line disappears. Error log: N/A
chart/org.eclipse.birt.chart.ui.extension/src/org/eclipse/birt/chart/ui/swt/series/DifferenceSeriesAttributeComposite.java
implements
			SelectionListener,
			Listener
{
	private Button btnCurve = null;
	private Group grpLine1 = null;
	private LineAttributesComposite liacLine1 = null;
	
	private Group grpLine2 = null;
	private LineAttributesComposite liacLine2 = null;
	private Button btnPalette = null;
	private Series series = null;
	private ChartWizardContext context;
	private static ILogger logger = Logger.getLogger( "org.eclipse.birt.chart.ui.extension/swt.series" ); 
	/**
	 * @param parent
	 * @param style
	 */
	public DifferenceSeriesAttributeComposite( Composite parent, int style,
			ChartWizardContext context, Series series )
	{
		super( parent, style );
		if ( !( series instanceof LineSeriesImpl ) )