New Outfits for Rey and Kylo Ren in Star Wars VIII - What could it mean?

The following is pure speculation.

Recently new outfits for Rey and Kylo Ren have been revealed which seem to have a slightly different style now for Star Wars 8 than the ones they used to wear in "The Force Awakens".

Rey's dress reminds us of the classic Jedi robes we are familiar with from the Prequel Trilogy. It's got kinda the same earth colors as the robes of  Qui Gon Jinn or Obi Wan Kenobi.

Rey's outfit is akin to the classic Jedi robes..

Kylo Ren though is still prefering a very dark outfit. Unlike the one he was wearing in Star Wars 7 he seems to prefer a Vader-like cape now over a cloak. The rest of his outfit seems to have been inspired by Luke Skywalker's dress from "Return of the Jedi" and/or Anakin Skywalker's outfit from "Revenge of the Sith". So a very dark appearance.

Kylo's outfit reminds of Anakin's and Luke's outfit.

Does the change of outfits indicate the progress both characters have made? During the teaser/trailer for "Star Wars VIII - The Last Jedi" Luke says that "It's time for the Jedi to end". To me this sounds like he'll be very hesitant training Rey in the Jedi-ways. In his mind he possibly thinks that he failed to continue the legacy of the Jedi because his former apprentice, Ben Solo aka Kylo Ren, turned to the dark side and slaughtered all his other padawans. He possibly feels that he's the last jedi and that there won't be any more, because he's not such a good Jedi Master and doesn't want to fail again. During the first half it's possibly on Rey to convince him otherwise. Her brown Jedi-like outfit could mean that she wants to continue the Jedi legacy.

With Kylo it could be totally different though. Anakin's black outfit in "Revenge of the Sith" was possibly an indicator for that he'd turn to the dark side in that episode. Although Luke was wearing a quite similiar dress in "Return of the Jedi" it possibly rather indicated his inner conflict. He encountered Vader for the first time in "The Empire Strikes Back" and failed to kill him. Indeed he even had to find out that he's his son. So he possibly didn't know if he should kill his father or if he should follow in his footsteps?

As we could see in "The Force Awakens" Kylo seems to be full of inner conflicts. He's still being touched by the light side of the Force sometimes although he tries to fight it. He wants to become a Dark Jedi and therefore tries to eliminate any light inside of him. That's why he killed his father, Han Solo. Because he represented one of his inner connections to the light side of Force. It could be that his outfit should represent his inner conflict which he's trying to fight. Maybe he will run into situations which will make him doubt about his current course. Maybe there's a chance of Kylo turning against his master, Snoke, at one point of the trilogy. But maybe only to become the master himself.