I suppose you're right that I was a little snappy, but his response did seem to indicate that he wasn't really paying attention. Indeed, my response to him was too charitable; on rereading Peterdjones comment, he seems to have been responding to some straw-man view on which I claimed it was vividness that made green green, while I responded as if he'd tried to address my actual view (that vividness makes green conscious, and other functional characteristics make it green).