Tilt your monitor to different angles and it will appear either royal blue and black or white and tan DEPENDING ON THE ANGLE OF THE MONITOR!!!!
So people who see it as one or the other have their monitors at different viewing angles.
ETA; some people are saying that they cannot change the colour, no matter what angle they view the picture at. I wonder if this may be a function of the age of the device, and how consistent it is a regulating the light levels no matter what the angle of viewing, and also, the age of the viewer; older eyes don't detect things quite the same way they used to. Or some combination of the two factors.