Demon's eyes, the red crimson eyes color, will kill anyone with it glance, whoever have this type of eyes color, they will be able to see the dead and may talk to them, demon's eyes can cause a lot of problems, a person can loses his or herself if the demon within take over. It can cause a person to lose all of their memories and might develop dissociative identity disorder. Demon's eyes may also cause hetero-chromia. Heterochromia, a type of condition that make a person have two eyes colored.
Black- Intense, stressed
Brown- troubled, restless
Red- rage, anger
Orange- aggressive, irritated/edgy,sarcastic
Golden yellow- hope
Yellow- confused
Yellow green- worried
Lime yellow- shock, surprise
Emerald green- triumph, hyper, energetic, mischievous
Dark green- disgusted, ill
Teal- alert
Ice blue- fear, scared, panic
Light blue- sleepy/ tired
True blue- relax, calm
Dark violet- bored
Blue- violet- serious, confident, concentration
Violet- happy
Light purple- exited
Magenta- embarrassed
Dark pink- drunk, lust, silly
Light pink - flirty, amuse, playful
White- hollow, blank, void
Gray- sad, lost, broken

But the main color will most likely to be red, icy blue, blue, blue violet, white and gray, there can be two colors present in both eyes.

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Hwan Eun Jae, a teenage boy who has been in a car accident and has been hospitalized for months, when he wakes up, all he can see is demons, although he can see normally, his vision is quiet from the others. His eyes color has change, and from there his life begins to change.