fFrameColor= viewer.getTextWidget().getDisplay().getSystemColor(SWT.COLOR_RED);
initializeHighlightColor(viewer);
	public LinkedPositionUI(ITextViewer viewer, LinkedPositionManager manager) {		Assert.isNotNull(viewer);		Assert.isNotNull(manager);				fViewer= viewer;		fManager= manager;				fManager.setLinkedPositionListener(this);		fFrameColor= viewer.getTextWidget().getDisplay().getSystemColor(SWT.COLOR_RED);	}