Of course, I wanted to see it, but since I planned only a few days in Tokyo, I had to rely on chance. And the luck favored me, so here's a photo with this special train. The special painting looks really, really good, better that the current Yamanote line livery... and I noticed that many people were also enjoying it, taking souvenir photos with the phones...
EXIF info:
Nikon D90
Lens: 18-70mm F/3.5-4.5G
Focal Length: 18mm
Aperture: F/5.6
Shutter Speed: 1/200s
ISO Sensitivity: ISO 200