"Is that your son? How old is he?"
"Yeah, he's 2 1/2."
"He's so tan! Is he out in the sun a lot?"
"Oh, well, not really. He's half black, so it's not so much a tan as he's just that color."
"Really! I would never have guessed with those blue eyes and that blonde hair!"
"Yeah, well, he obviously takes after me, coloring-wise."
"Were you surprised? When he ended up being that fair I mean?"
"Well, yeah I guess. He certainly wasn't the baby I pictured in my head when I was pregnant."
"And blonde! Where did the blonde come from?"
"Oh I dye my hair darker; I'm a natural blonde."
"Why? I mean, I can't imagine doing that."
"Uh....I dunno, something different I guess."
"Yeah, well you're son's really beautiful. You must be so happy that he turned out the way he did."
"Well yeah...wait. What do you mean?"
"It's just going to be so much easier for him looking the way that he does. And he won't have to associate himself with all of that cultural negativity. This way it will be easier for him to identify with you, and more positive future possibilities, y'know?"
So, um. Appropriate responses? By the way, we were cornered in the grocery store parking lot, so my response was just to leave. But this lady? Totally normal looking articulate lady.