An Alpha's eyes glow red. Yellow is the most common eye color among Betas and Omegas. Some Betas and Omegas have blue eyes. This color difference is an indication that they have taken an innocent life. Jeff Davis says the root cause of this change comes from within the werewolf (or werecoyote).
Werewolves, like Löwenmenschen and Werecoyotes, have glowing irises that vary in color based on their rank and status; Betas and Omegas will have gold eyes if they have never taken an innocent human life and will have blue eyes if they have taken innocent human life.
The colors
A standard, run-of-the-mill werewolf will have golden-yellow eyes. This is, essentially, the default setting. If a werewolf becomes an Alpha, he or she will then have red eyes. It makes no difference if you're a True Alpha or not, as the color is the same. Then, finally, we have werewolves with blue eyes.
Peter explains that if a werewolf has blue eyes, it's because they have taken an innocent life. When Jackson becomes a werewolf in season 2, his eyes are also blue. In this episode, young Peter is shown to have golden eyes (which, as this episode explains, means that he hadn't killed anyone yet).
Wolves' eye colors range from amber to pale yellow and even green. Blue, brown and black eyes are a dog trait.
Deltas appear in their wolf form like regular Betas except Their eyes are neon green rather than Pale Yellow, Like Betas.
Eye Color. An Alpha's eyes glow red. Yellow is the most common eye color among Betas and Omegas. Some Betas and Omegas have blue eyes.
The Primordials are the most powerful werewolves in existence and no werewolf can match their power, they possess some abilities that normal werewolves don't. Their abilities are at their peak during a full moon. Heightened Senses - Primordials have extremely enhanced, keen senses of hearing, sight, smell, and taste.
Derek Hale had the most eye color changes in the series. He had gold eyes as a teenager, his eyes turned blue when he mercy-killed his girlfriend Paige after she was bitten by his uncle, and his eyes changed to red when he became an alpha of the Hale Pack by killing Peter.
The Zeta takes the form of an 8 ft tall monstrous creature with black skin and white eyes.
A werecreature with red eyes is an alpha. When one rises to alpha status, their eye color, gold or blue, will change to red. Derek's blue eyes changed to red after killing a living alpha, his uncle Peter.
Sometime later, Derek entered into a relationship with werewolf hunter Kate Argent. If a werecreature with blue eyes were to be losing their power, their eyes will change back to gold as in Derek's case in 117.
Wolves can only have appearing blue eyes when they have a genetic defect (such as cataracts, which is really rare). In a natural way, wolf eyes never come in blue. The Iberian wolf you mentioned most likely had two different coloured eyes due to genetic defects.
Wolf pups are all born with blue eyes that change color until the sixth week, when the eyes change into its adult color. Adult wolves, however, never have blue eyes. It is a dog trait to have blue eyes or even different colored eyes.
Green is considered by some to be the actual rarest eye color in the world, though others would say it's been dethroned by red, violet, and grey eyes. Green eyes don't possess a lot of melanin, which creates a Rayleigh scattering effect: Light gets reflected and scattered by the eyes instead of absorbed by pigment.
An Omega, also known as the 'lone wolf', is said to be the weakest and lowest rank of werewolf. They are werewolves that are not with a pack and live by themselves. A werewolf could be an Omega by their own conscious choice to be alone and without a pack.
Super Strength: The Gamma Werewolves are stronger than Alphas, Betas, or Omegas, and can only be matched by either a True Alpha or another Gamma Werewolf.
So, what does it mean if you have blue eyes? Nothing more than that you lack melanin in the first layer of the iris. When light hits that area, it scatters and lets more blue light reflect back out. Fun fact—this scattering effect makes eyes appear blue in the same way that it makes the sky appear blue.
Not every wolf has yellow eyes, but most adult wolves do. Wolves are one of the most diverse animal species when it comes to their eyes. The color of a wolf's eyes depends on its genes, as well as the amount of melanin in its iris. It also depends very much on a wolf's age.
A True Alpha is a shapeshifter who rises to the Alpha rank solely on the strength and purity of their character and sheer force of will. True Alphas are extremely rare, only appearing every 100 years. One cannot rise to this status if they have taken a life.
We found that green is the most popular lens colour, with brown coming in a close second, despite it being one of the most common eye colours. Although blue and hazel are seen as the most attractive eye colours for men and women they are surprisingly the least popular.
The second-rarest eye color is hazel, a mixture of brown and green with golden flecks. About 18% of Americans have hazel eyes, compared with about 5% of the world's population.
Unbelievable as it may seem, the answer is yes—natural purple eyes do exist. Purple eyes are also commonly referred to as “violet eyes,” as they are typically a light shade. For most people, this striking eye color can only be achieved with the help of colored contacts.