I took this cover off of the computer while I was working on it and I couldn't see any reason to put it back on. Nobody can see the thing anyway. It's way around on the back. So far as I can tell by looking, it's in good condition.
Different computers and different monitors have different characteristics, and might display colors differently. Therefore, the colors of this item as they appear on your monitor might not be exactly the same as the actual colors of the real item offered for sale.