Kay, at Mason Dixon Knitting (link at right) posted today about KF's talk. She has pictures and more detail. The post is called Instinct Is a Good Designer (and So Is This Guy).
And by the way, Kaffe and Brandon both wore the same tops in her pictures as in Atlanta.
One thing I would add is that KF talked about loving color and pattern. The colors really sing because of their juxtaposition in a pattern.
So even if his shirt is rather subdued, each hexagon encloses a different print.
Kay also mentioned his attitude toward perfectionism. Me myself, not so into perfectionism. Perfection is impossible anyway.
According to Kay, he said that you can't really see the effect of your color and design choices at the row level, or the swatch level, or even the halfway-there level. You have to be willing to wait for the whole effect. If you work quickly, instinct starts to kick in, and "instinct is a good designer".
Personally, I don't remember him saying that particular piece, but then my memory is awful. Husband will say "do you remember XYZ?" and I won't, even if I was there or actually said or did it myself.
Anyway, this is only strengthening my desire to knit a Kaffe Fassett patterned Rectangle of Malabrigo (with maybe some Cascade 220, Manos del Uruguay, and other random skeins).