In the base layer of the wardrobe, if you select the Aya eyes

and then click through the different color options, you can see them jumping slightly back and forth. The eye on the left of the picture stays in the same place but the one on the right of the pic moves sideways by a few pixels. It's a subtle difference but noticeable.

Here comparing green and olive; note position relative to nose and ear.

I'm not seeing it?

Oh yeah, it's only the Olive one that has a different position. The left eye (our right) jumps more to the ear.