Is synesthesiac even a word?

Over at Fanboy Rampage I posted a long weird message that eventually touched on the criteria by which one should judge a comic book illustrator. In response to one of my exhortations, "Look at the rhythms of panel progression. Are they appropriate for the tone of a scene?" James Smith asked:

"How does this work? I mean, how do you figure out how to break this down?"

I posted this answer:

I