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
+ OBJ16_PATH + "data_column.gif" ); 
		declareImage( IReportGraphicConstants.ICON_EXPRESSION_OPERATOR,
				ICONS_PATH + OBJ16_PATH + "operator.gif" ); 
		declareImage( IReportGraphicConstants.ICON_EXPRESSION_GLOBAL,
				ICONS_PATH + OBJ16_PATH + "global.gif" ); 
		declareImage( IReportGraphicConstants.ICON_EXPRESSION_METHOD,
				ICONS_PATH + OBJ16_PATH + "method.gif" ); 
		declareImage( IReportGraphicConstants.ICON_EXPRESSION_STATIC_METHOD,
				ICONS_PATH + OBJ16_PATH + "static_method.gif" ); 
		declareImage( IReportGraphicConstants.ICON_EXPRESSION_MEMBER,
				ICONS_PATH + OBJ16_PATH + "property.gif" ); 
		declareImage( IReportGraphicConstants.ICON_EXPRESSION_STATIC_MEMBER,
				ICONS_PATH + OBJ16_PATH + "static_property.gif" ); 
		declareImage( IReportGraphicConstants.ICON_EXPRESSION_BUILDER,
				ICONS_PATH + OBJ16_PATH + "expression.gif" ); 
		
		declareImage( IReportGraphicConstants.ICON_WIZARD_DATASOURCE,
				ICONS_PATH + WIZBAN_PATH + "datasource_wizard.gif" ); 
		declareImage( IReportGraphicConstants.ICON_WIZARD_DATASET, ICONS_PATH
				+ WIZBAN_PATH + "dataset_wizard.gif" ); 
		declareImage( IReportGraphicConstants.ICON_WIZARDPAGE_DATASETSELECTION,
				ICONS_PATH + WIZBAN_PATH + "dataset_wizard_table.gif" ); 
		
		declareImage( IReportGraphicConstants.ICON_ATTRIBUTE_FONT_WIDTH,
				ICONS_PATH + OBJ16_PATH + "bold.gif" ); 
		declareImage( IReportGraphicConstants.ICON_ATTRIBUTE_FONT_WIDTH
				+ IReportGraphicConstants.DIS, ICONS_PATH + DOBJ16_PATH
				+ "bold_disabled.gif" ); 
		declareImage( IReportGraphicConstants.ICON_ATTRIBUTE_FONT_STYLE,
				ICONS_PATH + OBJ16_PATH + "italic.gif" );