Wurger, the first pic of Buffalos that you posted look like ones used as props in a Japanese movie, they had some re-painted in "Dutch" and "RAF" markings. and used them as propaganda pieces for some photo shots. If you look at the Buffalo behind the main one, it has a huge Dutch Flag and P marking (which I don't believe was standard issue, nor did any Buffs in Dutch colors fly such a marking, in a book or two on Captured aircraft you can even see the profile being depicted with the Dutch Flag near the wingtip bottoms of the aircraft)
The Hinomaru used on the pure Dutch (ie not repainted aircraft) were just painted over the Dutch insignia (there is one clear photo out there on the web somewhere), sometimes the marking had to be a bit larger than regular Hinomaru to cover the Dutch Triangle.
I believe that Wayne's assessment is correct, as most of these Triangles were covered over by repainting these dark green areas of the aircraft, therefore editing the original position of the Hinomaru (which would have been in a different position had it covered the Triangles more near center and to the edge of the wingtip)
They also re-applied a P-40 in older style US markings (with the red meatball) for the movie.
P.S. for the white outline on the Hinomaru on the top of the aircraft the only captured aircraft that this is easily seen on is the "crash landed" F6F