It fits that the "zune" pictured on that site is of the shit-brown variety too.
I can't understand Microsoft's reasoning there really. Maybe it was a brief moment of honesty that made them pick that particular color: the outside reflects what's inside - couldn't be more poetic than that.
Maybe Microsoft will understand some day that just because someone makes money from a certain sector of technology doesn't mean they should get into that business as well.
They tried it with games consoles and despite trying for roughly half a decade now they've still to make a single buck of profit from that venture. From what I've heard of the zune it's an even bigger financial dud.