I received my keyboard skins from TheGadgetLocker.com for my Apple Wireless and USB aluminum keyboards.  The skins are very nice and thin and seem to be better than my iSkin skin I have on my MacBook Pro’s keyboard.

They are almost invisible and you have to look closely to notice they are installed.  I probably will stop by The Gadget Locker one day since they are located only 30 minutes away from me and pick up a XSKN for my MacBook Pro also.