They looked green because these were not humans but Martians
actually.
All right, all right, give you a hint on where to find them: go to
any good search engines and type 'East Coast Parkway', 'Bedok
Reservoir', 'Jurong Swimming complex'. If all else fails, try
hacking into that MediaCorp Chinese language current affairs'
producer's hard disk - maybe the pictures are still being stored,
who knows.