User can change their eye colour.

Pros:
-user can switch between visual spectrums
-user can change pupil type
-user can make eyes like a bug
-user can change a small single eye

Cons:
-user has no physical advantages
-user must return their eyes to normal after a couple hours
-user will have ok-ish vision when bot using quirk

Weakness: unknown

This quirk isn't really for any combat, would be brilliant for cosplay though.