As a post-script to my last post (pun intended!) Zheyi, who produces the synaesthetic wine-art, has drawn my attention to a sommelier who also sees colours with wine (although as I read it he doesn’t turn this into art). You can read about this here. Given the response I’ve had I suspect that this is more common than we may realise.  What Zheyi felt was particularly interesting with this is that the sommelier has some similar colour responses to her – notably the association of yellow through to orange with high acidity in wine.  There is probably an interesting research project on this, to establish if particular structural elements of wine produce common synaesthetic responses, or if the association is merely haphazard.