This is interesting stuff. Bill D, I did a search on 'synaesthesia'. The first site I looked into is a nightmare for someone with attention deficit disorder. The background is incredibly cluttered and they've got stuff moving around all over the place.

Apparently I do experience this to a certain extent, although I never really thought about it before. I've still got the metalic taste in my mouth from the question "How does your anger taste". (And I've got a crushing headache from that 'synaesthesia' site.) I also experience smells that aren't really there from time to time.

Attention deficit disorder is a distant relative of autism, so if there is a link between autism and synaesthesia, maybe that's why I experience it to a small extent. I'm not going to search for references about this connection, though. My head hurts too much.