Bug 179431 [Automation]Chart background color issue[0602]
Details: [Automation]Chart background color issue[0602] Step: 1. Add a chart and set output format as jpg/bmp. 2. Add a chart and set output format as png/svg. Actual result: Step 1: Background color of chart is baby blue. Step 2: Background color of chart is black.
chart/org.eclipse.birt.chart.device.extension/src/org/eclipse/birt/chart/device/image/JavaxImageIOWriter.java
Messages.getResourceBundle( getULocale( ) ) );
			}
			if ( (int) _bo.getWidth( ) < 0 || (int) _bo.getHeight( ) < 0 )
			{
				throw new ChartException( ChartDeviceExtensionPlugin.ID,
						ChartException.INVALID_IMAGE_SIZE,
						"JavaxImageIOWriter.exception.invalid.image.size", 
						Messages.getResourceBundle( getULocale( ) ) );
			}
			
			if ( (int) _bo.getWidth( ) == 0 || (int) _bo.getHeight( ) == 0 )
			{
				
				
				_bo.setWidth( 1 );
				_bo.setHeight( 1 );
			}
			
			_img = new BufferedImage( (int) _bo.getWidth( ),
					(int) _bo.getHeight( ),
					getImageType( ) );
		}
		super.setProperty( IDeviceRenderer.GRAPHICS_CONTEXT, _img.getGraphics( ) );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.device.IDeviceRenderer#after()
	 */
	public void after( ) throws ChartException