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/PieSeriesAttributeComposite.java
{
		lblRatio = new Label( cmpRight, SWT.NONE );
		{
			lblRatio.setText( Messages.getString( "PieBottomAreaComponent.Label.Ratio" ) ); 
			lblRatio.setToolTipText( TOOLTIP_RATIO );
		}
		
		sRatio = new Slider( cmpRight, SWT.HORIZONTAL );
		{
			GridData gridData = new GridData( GridData.FILL_HORIZONTAL );
			gridData.horizontalSpan = 2;
			sRatio.setLayoutData( gridData );
			sRatio.setValues( (int) ( series.getRatio( ) * 10 ),
					1,
					101,
					1,
					1,
					10 );
			sRatio.setToolTipText( String.valueOf( series.getRatio( ) ) );
			sRatio.setEnabled( true );
			sRatio.addSelectionListener( this );
			sRatio.addListener( SWT.FocusOut, this );
			sRatio.addListener( SWT.KeyDown, this );
			sRatio.addListener( SWT.Traverse, this );
		}
		
		lblRotation = new Label( cmpRight, SWT.NONE );
		{
			lblRotation.setText( Messages.getString("PieBottomAreaComponent.Label.Rotation") ); 
			lblRotation.setToolTipText( TOOLTIP_ROTATION );