An option removed from MSPaint after Windows XP is 'Invert Colors'. I can do that on one of my XP computers, but not today. White and gold are the inverted colours of this light blue and brown dress.
A similar illusion is if you stare at an image which has only a couple of colours, and then you look away. For a few seconds, you will see the inverted colours of what you had been looking at.
For example, stare at this image
for 30 seconds, then look away, and you should see the face of Ike Turner.