My favorite modern fairy tale

Once upon a time, there was a girl named Mari, who lived in a small country called Marila. The special thing about Marila was that every citizen was born with an implanted set of spectacles with yellow lenses. These spectacles made everything Mari could see appear in a friendly yellow, but she couldn't take off her spectacles.

One day she decided to live for a while in the neighboring country called Azuro. The Azurans were also born with implanted spectacles, but with blue lenses! Because of the different color of their spectacles, Mari saw things differently than the Azurans - yellow instead of blue. But Mari was well prepared before she left for Azuro, she learned a lot about different colors of spectacles. After some time she managed to put on some blue spectacles, not exactly the same tone of blue the Azurans had, but very close. By and by, she was able to see things like the Azurans, but only partly: Because she couldn't take off her yellow spectacles, she had to wear her new blue spectacles on top of her own yellow ones - and everything appeared to her in green!

Even the blue spectacles could not be taken off again, not even after she returned to Marila, and by understanding more about the perspective of the Azurans, she developed a new perspective on her own culture as well.