if (i == -1) return;
			public void widgetSelected(SelectionEvent e) {				boolean systemDefault= fAppearanceColorDefault.getSelection();				fAppearanceColorEditor.getButton().setEnabled(!systemDefault);								int i= fAppearanceColorList.getSelectionIndex();				String key= fAppearanceColorListModel[i][2];				if (key != null)					getPreferenceStore().setValue(key, systemDefault);			}