Well typically once they know your name they will address you accordingly, it's more of a blanket statement to refer to non Chinese etc.
I'm still not convinced it's racism, after all if you expat abroad you are a foreigner..
And when I see Obama I see a American not a negro or Kenyan.
I'm starting to think this forum is a bunch of angry white guys who live in Asia and come here to complain about the injustices they face as expats. Too funny seeing as they choose to live in these countries and aren't born there.