Actually it was apparently a small group of 4chan trolls engaging in some old fashioned "trolling for teh lulz." They took art from fanartists and recolored the artwork to make the characters thin and white in order to get a reaction out of people.

As Matt says though, best thing to do is ignore them as attention and a reaction is simply what the trolls want in the first place, but at the same time yeah I'm not defending the actions of the trolls because as I said I feel defending their actions is the equivalent of "prank" videos where the "prankster" is like "hey I'm gonna ruin your property but don't git mad tho bro itz just a joke lulz ayy lmao."

Amethyst is purple. That's all I'm gonna say about this.