"Ah, I love blue." He's probably wearing at least one shade of blue on him right now! It's just an off-handed comment, though; you can't possibly just have outfits of one color. Reaching over to grab his notepad, he starts to sketch something out.

"The outfit itself does seem pretty practical. Good for running around in." He'll keep that same general shape, then. With some variations - again, you can't have all your clothes look the same! "Hey, are you feeling better? You seemed pretty sick, last time I saw you."