Hoppers have 14 eye patterns ranging from Light and DarkG, to Light and DarkG. The eye pattern progression is the same as any other trait progression. Hoppers have their color tint on their eyes.

LightA -> LightB -> LightC -> LightD -> LightE -> LightF -> LightG -> LightF
DarkA -> DarkB -> DarkC -> DarkD -> DarkE -> DarkF -> DarkG -> DarkF

Swirl, and No.Swirl on the control HUD will enable and disable eye blinking.
A hopper's spot pattern is based on their class, with a classless hopper also lacking spots.