You didn't upset me. I just found it a little bit irksome that a complete stranger would feel the need to flatter me on my (unknown) appearance, particularly uninvited. If I'd been expressing uncertainty as to what to wear, it might have come across as friendly reassurance, but instead it felt like a very backhanded compliment when all I'd done was state what I usually wear. Perhaps if you re-read what I wrote as well as your answer, you might get my drift
Anyway, enough of this - I hadn't meant to derail the discussion!