Re: can someone answere this?
in naruto, when someone uses a doujutsu, it reflects their eye pattern on the person/people they are controlling.
Its happened several times. When Tobi tore the fox from kushina and took control of it, the foxes eyes looked like sharingan.
When Sasuke was controlling Manda (giant snake) to protect himself from Deidaras Suicide explosion, Mandas eyes looked like sharingan.
So basically, while Nagato was controlling his paths, their eyes looked like his, and as an added bonus from the rinnegan, they could all see everything that the other paths saw.
Tobi is using the rinnegan to do the same jutsu pain used, except Tobi has a rinnegan AND a sharingan. Therefore, when Tobi uses his eyes to control the new paths, their eyes look just like his.