There is a photo of "Hikawa Maru No. 2" on:
http://www.netherlandsnavy.nl/Noort.htm
The ship is clearly painted in the white hull etc scheme but the date when the photo was taken is unknown.
Re the second scheme you posted, I think this is the scheme used by Japanese repatriation ships post-war. I have seen several b&w photos of Japanese merchant and naval ships with white crosses on the hull, these were all taken post-war when the vessels were used to repatriate Japanese citizens.