Unreasonable take. If you're going to assume it's fake because it's posted online, then why be on the internet at all? And how many people should there be before the story is to be believed? Ten or a thousand? Assuming this is actually true, why isn't one case enough to show us that there may just possibly be a problem with the new devices, given that this has never happened before?
Or do we have prior stories of iphones changing color that were ultimately debunked? As far as I remember, no. This is why dismissing this makes no sense - given that this has never happened before, if someone thought about changing the color of the phone, why now? No one for some reason decided to do this throughout all these years of iphones being released? Do we think no one had the imagination to change the color or the photoshop abilities were insufficient?