I bought a "silver" touch ID keyboard that came from a silver iMac. The only option available on eBay at the time was the one without the number pad. The minute I saw the standalone was available on the store I bought the number pad version. It is a totally different color. The "silver" one that comes with the iMac has keys and bottom that are much more of a cool gray/white. The standalone version is a true white (slightly yellow) color. It's hard to capture in photos but I did my best to illustrate the difference between the two. Not a big deal, just thought people might like to know that the iMac colors are really exclusive, even if you think the silver version is standard.