I have the red leather Smart Cover and the outside of it is already darkening around the edges, I imagine from the oils in my hands. This sure seems to have happened in a relative short period of time, considering it's been less than two weeks since it was released (and only a few days left if I decide to return it.). Does anyone else think their leather cover has gotten dirty fast. Which leads me to my second question. How do you clean the darn thing? Since the color is susceptible to running, I've been reluctant to wipe it with anything wet. But it doesn't seem practical to never wash it. Does one really need to purchase leather cleaner?