The chaos in Inkopolis could not be understated.
The Inklings chose as their favorite pastime a sport which covered the ground in bright colors. Arguably, their second favorite was shopping for clothing, almost exclusively available in bold colors. While Toni Kensa was popular, even their black and white style was not as impressive without the red accents.
They woke up that morning to a great surprise: their colorful world was completely grey. Everything from the Inklings themselves, to their clothing and gear, all the way to the sky itself was entirely devoid of color. For a species which can normally change color at will, this was a
pretty big deal.