John, your story isn't quite the same as what is being debated here. The issues of being lao wai and caucasian/asian intermarriage is a whole other ball of wax. I applaud your attitude, but it isn't the same as white/black. And if you were living in China, you'd find some different attitudes.
We should all strive to be "color blind", but I think we also have to try and understand our own biases, and the ones of those around us. And often times, the way someone reacts to us has less to do with us and our race, and more to do with the fact that they might just be having s crappy day. Of course some people seem to always have a crappy day