No idea, lol. At least his old mask looked like a proper mask. This one looks like something Rorschach would wear.
You'd also have to wonder.. if the pair of Rinnegans originally belonged to Madara.. were they his original eyes? Did he take Sharingans from people to implant on himself after he gave the Rinnegan away?
Or was he just some 4-eyed freak? There's certainly no shortage of freaks in the ninja world, in Akatsuki especially.