Nice picture and good processing, but I'm not sure if it's Dichotomy and since I'm not even sure to understant Dichotomy myself, I'm voting all pictures as if they meet the challenge.
Color and b/w I suppose are mutually exclusive ideas so... meets the challenge. As for technicals I think you did a great job with the line between the two. My only nitpick would be in the b/w area I'd like to see a little more clarity on the horse but it isn't bad the way it is either.