Bug 135284 [Viewers] API: need to add methods to StructuredViewer to support ViewerComparator
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/StructuredViewer.java
control.setForeground(foreground);
					}
				}
			}
			else{
				
				control.setBackground(background);
				control.setForeground(foreground);
			}
			
			if(fontProvider == null){
				if(usedDecorators && font != null) {
					control.setFont(font);
				}
			} else {
				control.setFont(font);
			}
			
			clear();
		}
		
		
	}
	
	/**
	 * The ColorAndFontManager collects fonts and colors without a
	 * a color or font provider.
	 *
	 */
	protected class ColorAndFontCollector {