Upload & Sell: Off
I think B&W looks better for a number of reasons. The busy background is less obtrusive in B&W. Also, in B&W her face feel dominant in the image while in color, she is competing with other elements such as the bright red coffee cup. Plus, street photography always seems, at least to me, to flourish in B&W.
The last image is my favorite. Her looking right into the lens takes the photo to another level. It appears as if she's looking into your soul...but not giving a damn. In the other images where she's looking away, her power diminishes.