Actually, I liked the color question. I was really trying to think of a character color for Kotori and thanks to that question I finally came to the perfect one. Yellow, to reinforce her "gloomy" theme. Now, I know that you might've wondering what yellow has to do with gloominess, but know that it's a color traditionally associated with death on the far east, on chinese folklore, it's said that the well that leads to the entrance of the underworld radiates yellow light.