Tan

I didn't hear the first part of the conversation but the boys were talking about colors, specifically the color tan.

Benjamin was explaining to John Stephen, "Tan is kind of a brown color.  It's not dark brown but more of a light brown.

"Oh," John Stephen agreed.  "Our skin is tan colored."

"No!  Actually, it is not," Benjamin corrected him.  (His tone of voice totally cracked me up, not to mention the fact that our skin will never be described as tan!)

"Our skin is apricot.  Or maybe it's peach colored.  Yeah, we have peach colored skin!"  Benjamin continued.