[New York, October 14: The Rockettes rehearse for the upcoming "Radio City Christmas Spectacular" at St. Paul the Apostle Church. The annual show opens at Radio City Music Hall November 5 and runs through December 30. Image via Getty.]
The one with black shoes is also the only one with darker skin. I suspect that she might not be such a rebel as some other commenters suggested, but that perhaps they are required to wear shoes that are closest to "flesh tone" for them... beige if you're white, and black if you're anything else...?