So before the episode "It's Not Easy Being Green's" name was released, I saw a picture on Adam's twitter page that showed the title of this episode being "Behind the Green Curtain". It had the same episode number and everything whenever he releases an epsiode title spoiler. However that picture got deleted and soon after this title was revealed. I just think it's quite interesting. Maybe they wanted to re-write this episode or something, but it just makes you wonder what's going to happen in this episode. Tell me your thoughts and if you saw the image too.
I think this ep is going to reveal who the Wizard is as well as give us more background story on Zelena like how she turned green and Wicked (it's probably Rumple's fault again). So i guess either title is appropriate.