I have seen pictures of a hand from the grey type. I cannot say the circumstances, but my gut feeling due to the nature of who and from whom it was obtained, I am more inclined to say that particular picture was legit. Picture above could be perfectly genuine but as I have said before on another threat with modern day computer graphics, it is easier to fake pictures, videos etc. Do people want to believe it even if they saw it with there own eyes? Are they mentally or social capable of thinking along such lines? It is a difficult one.