I see blue and brown. But it's a very light blue. No frikking clue where they get the black from though. Might be part of the thing where people think cameras and computer monitors can accurately capture and display every color under the rainbow when they very much can not.
My hypothosis is that it appears blue to people who spend a significant amount of time looking at computer screens and are more accustomed to the smaller pallete. And those who do not simply see it as white. Honestly curious if anybody has ever done any actual research into this kind of thing. This is not the first place I've heard of this kind of thing happening.
The camera and computer is more than capable of capturing/displaying white, so it's not the limited colour. It's the camera's inability to properly capture the colours in the scene.
People are capable of perceiving colours fairly accurately under a variety of different lighting conditions, so a bluish or reddish light generally won't hinder our ability to perceive the colour of objects. For example, we know from prior knowledge that a wall is white. So when we see that the wall is in fact red, our mind knows that there is a red light and allows us to perceive other objects true colour more accurately with that information. The object which is actually being picked up by the eye as purple is actually being perceived by our mind as blue.
That image has very little information in it, however. We are unfamiliar with the dress, the background, the environment etc. And as such our mind will start guessing information about the scene, such as colour. With little information to go on, the result will vary between persons. Some people will perceive its white and gold because the poster told them it was white and gold (this does influence your perception). I perceived it as white and gold because I am familiar with the process digital cameras use to capture images (and as such am familiar with how poor configurations will affect an image).
The image looks blue because blue tinted because of the poorly configured colour correction (as far as I can tell, anyway). The camera is trying to make the image "look good" by balancing the colours, but it does not have the knowledge that the colours should not be balanced the way it is balancing them (as most of the image is yellow from light, most of the image should be yellow, but it doesn't know this because its a dumb camera).