JR Hokkaido 789 series in Shinkansen H5 livery

[Densha]

As of now no other information than this photo taken at Goryokaku is available.

Edited March 16, 2018 by Densha

[EH500 (12)]

That looks cool. But the difference in colors around the driver cab is weird.

[Suica]

That's a 789 series.

You can still see its original green Super Hakucho colour around the cab.

[bikkuri bahn]

19 hours ago, EH500 said:

That looks cool. But the difference in colors around the driver cab is weird.

That’s because it’s not a paint job, but rather a stick on decal (wrapping).  Making the decal to fit around the compound curves and angles of the upper cab would be too much trouble.