@Override
	public void serviceAdded(Class<?> interfaceClass, Object newService) {
		if (interfaceClass.equals(MarkerService.class)) {
			markerService = (MarkerService) newService;
		}

	}
A plugin to provider actions for manipulating the colors of the {@link CodeViewerService}.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/colorizer/ColorizingPlugin.java