Lately Sylvia has been noticing different skin colors. When she talks about other kids sometimes she'll say "That brown boy" or "that dark girl". I've told her that she shouldn't identify people like that but I'm not sure what to say when she asks why. In her mind it's no different than describing hair color or clothes or whatever. She's also been using words to describe people like old or fat which is a lot easier to dissuade and explain why, but how do you teach racial sensitivities at this age? Should I even worry about it?