IF he is the only brown child in town - don't you think that would make him feel different? Even if not one soul treated him different - the color of his skin is different so I can only imagine there is a feeling of being different. I think my difficult child thought she was different due to being molatto. She was not black or white.
So, while I agree with Trinity that he should not be held to any different standards, I do think you have to be aware that he may have feelings of being different than others around him.
Wendy, you do make a very good point. It's entirely possible that little SK may have feelings of difference that come from within. Just to put things in perspective though, I'll share a bit of my history...
I am mixed race (black-white-east indian-miscellaneous other). My family has been mixing for generations, each with different variations. So, I don't look like either of my parents, anyone else in my family, or anyone else I know. I was one of 3 black children in school, and there was no one around who looked like me. That said, I didn't realize I was black or "different" in appearance until I was about 16 years old. It struck me one day that when people were referring to "black people", I was one of them. This was also around the time that so-called sensitivity training became prevalent.
I think that an external focus on race and skin colour has a far greater and deeper effect than anyone thinks. It was only when people started to try to be sensitive to my blackness that I became aware of it at all. I think it can be of great detriment to someone who's just trying to fit in, to always have one's differences highlighted.