What if you cropped the picture down so that the cat's eyes are in a sweet spot (upper left rule of thirds area?). If you could get away with doing this then I think the color version would work better.
I had tried cropping before I posted and did not like the results very much. The one on the left is, I think, the best result. I do think, however, that too much of the environmental context is missing.
I'd love to hear other opinions on this.