Yes that's a really great blog with rare period photos.
I mean the Z432 not the Z cars at all. All photos of the Z432 at the 1969 Tokyo that I have seen shows the orange Z432. But this photo with natural colors shows the yellow one. So, two z432 were demonstrated isimultaneously n different places?
How many Z432 displayed at 1969 Tokyo Motor Show. One or...two?
Here the photo from 1969 Tokyo. Pure yellow.
Found here:
https://4travel.jp/travelogue/11638925