I had not noticed Sunny's hair being very different this season. She seems to be edgy with Alyssa Farah Griffin who is the best person so far to be a regular to present a more conservative view -- finally one who has good manners and can carry on a conversation without screeching. It's been a good season so far, Joy looks great. People do love to be critical of these ladies.
I don't know why anyone should criticize them for not bantering during commercial breaks, many shows go quiet like that, saving "good talk" for the cameras and microphones. That is what they are there for.