Bug 89137 [JFace] - API Review - "temporary" API in AbstractTreeViewer
AbstractTreeViewer contains two methods documented as "temporary" internalRefresh(Widget, Object) internalAdd(Widget, Object, Object [])
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/StructuredViewer.java
if(foreground == null)
				foreground = colorProvider.getForeground(element);			
		}
		/**
		 * Set that decorators were applied.
		 */
		public void setUsedDecorators() {
			this.usedDecorators = true;
		}
		/**
		 * Apply the fonts and colors to the control if
		 * required.
		 * @param control
		 */
		public void applyFontsAndColors(TableItem control) {
			
			if(colorProvider == null){
				if(usedDecorators){
					
					if(background != null)
						control.setBackground(background);
				
					if(foreground != null)
						control.setForeground(foreground);
				}
			}
			else{
				
				control.setBackground(background);
				control.setForeground(foreground);