I Walked with a Zombie
Lilith is the first demon in "Supernatural" to be depicted with all-white eyes. When creating the character, it was decided that her demonic eye color should set her apart from previous demons in the series in order to illustrate her power. Inspired by his viewing of the horror film "I Walked with a Zombie" the previous year, Kripke was excited by the opportunity Lilith presented to introduce white-eyed demons into the show's mythos because he had found a white-eyed creature shown in "I Walked with a Zombie" to be "really disturbing". Unlike actors portraying Azazel in previous seasons who had had to wear contact lenses, Boecher's eyes were colored white using visual effects.