Keyboard Outline On Screen?

I purchased a Macbook a week ago and so far have enjoyed it but one thing I just noticed and is bugging me is that when the screen is off I can notice what appears to be keyboard keys on my monitor which line up when it's closed. It doesn't seem to be noticble when it's turned on but it's pretty annoying to say the least.

Anyone else have this issue or should I return it (doubt i can return it as its the clearance one).

Thanks.