The creative challenge of the day for the game #I_am_here_eternity

The creative challenge of the day for the game #I_am_here_eternity. You have the freedom to join the game (and quit it) whenever you want. Follow your curiosity and do the tasks that spark your interest. And those that you don't like - ignore them. The reward of the game (with consistent and diligent effort (and practice) of tasks) - a richer and happier life.
391. Only in one square are small squares all of different colors. Where?
#I_am_here_eternity

https://us-a.tapas.io/a/4e/6376edb9-8...