Bug 122045 Template should show blank preview when there is no image
Create a template but do not associate an image with it. Place the template in the templates directory. Now, create a new report design. On the second page of the New Report dialog, select the template that has no image. Actual result: The preview appears as a white rectangle with a small red square in the top left. Expected result: The preview appears as a gray background in the preview image area.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/ReportPlatformUIImages.java
{
	private static ImageRegistry imageRegistry = null;
	/**
	 * Declares Common paths
	 */
	public final static String ICONS_PATH = "icons/";
	public final static String DOBJ16_PATH = "dobj16/";
	public final static String DTOOL16_PATH = "dtool16/";
	public final static String ETOOL16_PATH = "etool16/";
	public final static String EVIEW16_PATH = "eview16/";
	public final static String OBJ16_PATH = "obj16/";
	public final static String PAL_PATH = "pal/";
	public final static String PROGRESS_PATH = "progress/";
	public final static String MISC_PATH = "misc/";
	public final static String WIZBAN_PATH = "wizban/";
	static
	{
		initializeImageRegistry( );
	}
	/**
	 * Declares a workbench image given the path of the image file (relative to
	 * the workbench plug-in). This is a helper method that creates the image
	 * descriptor and passes it to the main <code>declareImage</code> method.
	 * 
	 * @param key
	 *            the symbolic name of the image
	 * @param path
	 *            the path of the image file relative to the base of the
	 *            workbench plug-ins install directory
	 */