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/BmpRendererImpl.java
{
		return "bmp"; 
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.device.IImageMapEmitter#getMimeType()
	 */
	public final String getMimeType( )
	{
		return "image/bmp"; 
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.device.image.JavaxImageIOWriter#getImageType()
	 */
	public final int getImageType( )
	{
		return BufferedImage.TYPE_INT_RGB;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.device.IDeviceRenderer#after()
	 */
	public final void after( ) throws ChartException
	{
		try
		{