I was fooled by the pictures when I bought my B2. The black face is as you might expect. The silver face is much more silver than the picture seems to indicate. I think that's because it is rather reflective of whatever is near it.
The current models do not have the USB-B port on the back. It not used and even on the old ones that show it, it does not work for external devices. USB port B is used internally by the HDD (or SSD). There is a micro-USB port, but I don't know what it does.