OK, I'll tell you what I think, for what it's worth.
Of the two, I prefer the b&w version. The reason I don't prefer the colour is that the flesh tones in the right hand side draw all of my attention to that part of the image. It makes the diagonal line of the fabric act as a stop to my eye. I find this a shame, because when I look at the b&w version, my eye is left to explore the whole image and there are some really nice things about the folds and textures in the fabric. I realise some might say the subject is everything and that line does a good job, but not for me.
I think they would both be rendered more compelling to my eye if there were a good bit more contrast there. - I think the colour version would gain more from such an uplift but I think I would still prefer the b&w.