This is application of a color optical illusion.
A black-and-white picture looks like a color picture!!

Your picture turns into an optical illusion picture.

A negative picture is displayed first.
Please continue looking at the central guide point.
15 seconds later.The negative picture is switched to a black-and-white picture.
But...
The black-and-white picture looks like a color picture!!

*Method to look well
- Do not move position of your eyes and the screen.
- Continue looking at the guide point after switching to a black-and-white picture.
- Do not blink your eyes.

You can get GIF animation.
Let's share it on Web.

This is samples.
http://en.nekobukiya.com/colorfulmonotone/sample