Thanks Golunvolo. Indeed, the third one is just one "lucky shot", but I do not try my luck very often. I saw the ladies coming from a distance and waited for them to overtake me (we were walking in the same direction). Pic was bound to get unsharp (f/2.8 to avoid picking up too much junk, and camera shake, unavoidably) but sometimes it's the right thing. Anyway I am (to a certain extent) fed up with still lives or posed portraits...
Akira, I guess in Tokyo they would already have burnt their feet soles. In fact, overhearing their conversation, it appears that they were looking for a foot massage experience, like walking on pebbles (Chinese style, possibly also Japanese ?) and were frustrated by flat tar.
Concerning the colors, you are right, I did not notice and at first, I found the blue car to be disturbing.
