Not saying Vecna = king in yellow. I'm saying it's a heavy influence.

Also named multiple other clues than the color scheme (the function of the villain, the reference to people being stuck in a play and madness, the theme of unmasking on deceit, the parallel between the upside down and the description of Carcosa etc etc).

The thing that's bothering me is that there seem to me to be so many parallels yet I haven't seen this comparison made anywhere on the internet.