He smiles at her acceptance, pleased that he was able to help. After Rachel drapes the shirt over her arm Lex begins to look at a pile of men's shirts and glances up as his fingers sort through the sizes.

"Believe it or not I'm a natural redhead," his tone of voice is even, almost bordering on monotone if not for the barest amount of inflection as per usual. The longer Rachel talks to him the better she will likely be at deciphering it. As it is there is a hint of amusement in his voice, allowing her to decide for herself whether or not he is joking.