Bug 18266 Turning off lightbulb preference doesn't turn the lights off right away
When you turn off the lightbulb preference, editors with existing lightbulbs continue to show them. Closing and reopening the editors gets rid of them.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/JavaEditorPreferencePage.java
store.setDefault(ContentAssistPreference.SHOW_VISIBLE_PROPOSALS, true);
		store.setDefault(ContentAssistPreference.CASE_SENSITIVITY, false);
		store.setDefault(ContentAssistPreference.ORDER_PROPOSALS, false);
		store.setDefault(ContentAssistPreference.ADD_IMPORT, true);
		store.setDefault(ContentAssistPreference.FILL_METHOD_ARGUMENTS, false);
	}
	/*
	 * @see IWorkbenchPreferencePage#init()
	 */	
	public void init(IWorkbench workbench) {
	}
	/*
	 * @see PreferencePage#createControl(Composite)
	 */
	public void createControl(Composite parent) {
		super.createControl(parent);
		WorkbenchHelp.setHelp(getControl(), IJavaHelpContextIds.JAVA_EDITOR_PREFERENCE_PAGE);
	}
	private void handleSyntaxColorListSelection() {	
		int i= fSyntaxColorList.getSelectionIndex();
		String key= fSyntaxColorListModel[i][1];
		RGB rgb= PreferenceConverter.getColor(fOverlayStore, key);
		fSyntaxForegroundColorEditor.setColorValue(rgb);		
		fBoldCheckBox.setSelection(fOverlayStore.getBoolean(key + BOLD));
	}
	private void handleAppearanceColorListSelection() {	
		int i= fAppearanceColorList.getSelectionIndex();
		String key= fAppearanceColorListModel[i][1];
		RGB rgb= PreferenceConverter.getColor(fOverlayStore, key);
		fAppearanceForegroundColorEditor.setColorValue(rgb);