Unregistered

Hi all,

Hopefully someone here can help me on what has been an epic search!
I am looking for a paiting that I saw 10 years ago in the Ohara Museum of Art in Kurahshiki in southern Honshu island, Japan.

The painting is very large, and was done in the early part of the 20th century (from memory). It is a portrait of a large naked muscular woman seated in an armchair. The entire painting is very multi-coloured and the woman herself is green. She is looking directly at the viewer, has short dark hair (may be Japanese?) and is incredibly powerful but peaceful also.

I have no idea who the artist is, although I have a suspicion that it is a Japanese artist, although this museum has a large collection of foreign modern artists.

Can anyone shed light on this predicament? Sorry the details are so vague...