turquoise???...

In your world, at 18, eye color most often changes depending on personality. I'll tell you everything now.
tiger🐅 this is when the eyes become pupil-less and the rainbow becomes orange with black lenses, like a tiger, most often in character, which is kind and can protect itself well and in general sometimes can be aggro
cat🐱 is when the pupil becomes cat-like and when you like something it dilates, and when you don't like it it narrows, most often indicating a good character
snake🐍 is given snake pupils, often given to bitches or impudent people
and there is another type, but it is more of a legend than a reality:
??? turquoise bright pupils with black or white patterns are given to the character ???
You turned 18, you celebrated, the next day you woke up, looked in the mirror, and... turquoise? If you tell anyone, they'll definitely put you in the lab. You decided not to tell anyone and went to school with tiger contacts. You've been wearing them all this time, and now you're at university. You're 19. You have a friend from school, and he's at your sleepover. When morning came, of course, you took the contacts off. You woke up first, otherwise he would have seen you, and you forgot to put them back in. You went to make coffee, he woke up and came toward you, you turned around, and he saw...
Mark: Oh my god... Amy? Am I not awake yet or...? Why are your eyes...???...