Soulmate AU where a person's right eye will be their own eye color, but a person's left eye will be their soulmate's eye color.
Elaboration: A lot of people will wear eye patches over their left eye so others can't see their soulmate's color, or even sunglasses so no one can see their own color or their soulmate's.
There are a lot more possible eye colors in this AU, as the current possibilities are fairly limited and may be confusing.
Most people have two of their own eye color up until their left eye changes to their soulmate's between the ages of 6 and 15.
EXAMPLE SHORT STORY:
TBC