Show HN: A color challenge that will break your faith in your eyes (trickle.so)

It looks easy: a grid of identical colors, except for one that’s just slightly different. At first you’ll spot it instantly. Then the differences shrink, the grid grows, and you start doubting your monitor, your eyes, and yourself.

https://trickle.so/apps/colorfind

Curious to know how far you get before you can’t see it anymore.