Another photo show, by Dirk Rösler.

and not a single shot in black & white. This seems to be a real phenomenon.

I have only read this morning that black & white was the dominant way for mass market photo printing in China until the 1990s. Perhaps black & white is still too close to become a form for artistic expression. Especially developing countries may want to distance themselves as much and as fast as possible from those relicts of the pasts that may stand for poverty and technological inferiority. Since the Japanese culture and mindset contains a lot of developing country values, similar reasons may be at play here. Remember that the people in those photo clubs are usually middle-aged men around 60, who witnessed the boom years and the rise of Japan. They may not want to have anything to do with artifacts of that poor and undeveloped pasts.

Just having a stab at this. What do others think?