I have a translucent silicone cover for the back of my iPad 2. It allows the use of the smart cover and access to all of the controls and ports. The amount of daily grime and stuff from constant travels will not clean off of it and looks really gross. I can use a stiff brush and hot water with soap. It does not look clean enough to suit me even though I know it is clean. I need the same cover in black. I thought I bought the cover from a vendor here on the forum but I can not find them.