New RGTR livery looks really great. Is it a requirement for all new buses serving the network?

I also think that it looks great! Especially on these Caetanos.
In fact its required for all new buses on the RGTR network and even the older buses are getting repainted like this one. Altough the new Citaro Ü hybrid for Emile Weber haven‘t been delivered in RGTR-delivery and are running in white color on the RGTR network.
Another fact of this Caetano is that it got the RGTR and Emile Weber logo removed to be able to serve on the AVL-network for Vandivinit until the new buses arrive. Vandivinit lent this one an WV2052 to run on AVL route 19 an 31.