JR East's factory at Niitsu has turned out a green car for use with the SL Ban'etsu Monogatari steam excursion. Its first run will be this Saturday April 6. It is based on SUHAFU 12-102. They've also got a pdf available http://www.jrniigata.co.jp/press/20130124sl4-9-g.pdf with some artist's renderings of the interior. I'm looking forward to some photos and video of the real thing.
http://en.wikipedia.org/wiki/File:Banetsu_Monogatari_SuRoFu_12_102_Niigata_20130406.jpg