Cockpit paint color.
I think the A31 is nearest.
Or
http://www.mr-hobby.com/en/itemDetail.php?iId=87
This is paint for plastic injection model.
Find "C127"
Several L2D were made by NAKAJIMA AIRCRAFT.
But in Japanese navy, the color of the paint depends on a production factory.
So I can't say "C127 is right" clearly.