"The checkerboard illusion involves just black and white, but the idea extends to the color of the dress," he said. "The main point is that we can't tell the difference between white and blue ...

What’s more, one hand is in all black, while the other is painted ... Chillhouse’s Checked Out press-on nails feature a blue and white checkered pattern on a softly rounded shape.

Long before any of this had ever occurred, I was introduced to the checkered way ... subtle shades of blue, green, and purple are dragged through every brushstroke of black and ivory.