Way back in the day (okay, 2-ish years ago) iKon announced its fandom color and some people were a little upset.
And by some people I mean Cassiopeia, TVXQ's fandom, and the largest fan club in the world.
The color chosen by iKon happened to be similar if not identical to TVXQ's famous Pearl Red, and a number of (very wealthy) Chinese fans decided to remind iKon of that.
They hired buses to drive around the area of iKon's concert/showcase. They took out bus stop ads, they even bought advertising space on the buzzers used to call out people's orders in cafes in the surrounding areas.
They all basically say the same this - “TVXQ has been using pearl red as the official color since December 26, 2003. Hoobae-nims, please respect it!!”
Now I'm not saying this is right, but DAMN that is dedication on the TVXQ fans' part.
But really - there are only so many colors, can't we all just get along?