Wait why does changdoek’s eye color keeps changing?

J'ai remarqué que ses yeux devenaient gris/bleus quand il avait des émotions fortes. Je pense que c'est juste le style de dessin de l'auteur

Since he’s a vampire, his eyes are originally a dark grey/black color but when he feels “hungry” or lustful (it seems that way to me) his eyes change to read basically when he experiences a severe emotion like being surprised etc ╮(￣▽￣)╭ (take this with a grain of salt I also don’t remember much)

I’m not talking about the vampire I’m talking about the human

Ohhh it’s probably the authors way of showing that he’s surprised or experiencing and unexpected emotion like how the other reply said, sorry for misunderstanding </333

an unexpected *

His eyes are actually greyish blue but bc of the art style it's only shown on up close shots. Think of sleeping beauty, she's blue eyed but because of the art style it's only shown when she wakes up form her sleep.