![Optical illusion](https://www.roumazeilles.net/news/en/wordpress/wp-content/uploads/optical_illusion_05.jpg)
The top losanges are of a darker grey than the bottom ones, are they?
Furthermore, you will find more and more of these examples of optical illusions in this web site in the next months. I even opened a specific thema just for that since people seem to love finding them here. You can come back (or subscribe to my RSS feed).
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