#1 Technically , these are not even squares, let alone being of same colour. Upper is grey with a black shadow, and lower is white with a grey shadow. So, not the same colour.
But flip the image upside down, and you'll see a very different picture.
There are specific parts of your brain dedicated to face perception. But, we rarely encounter upside-down faces, so, when we do, it’s very difficult to spot any distortion.
#1 Technically , these are not even squares, let alone being of same colour. Upper is grey with a black shadow, and lower is white with a grey shadow. So, not the same colour.