u/Usual-Sorbet3347

I’ve always said green with one being more green and one being more blue. Someone recently called them hazel.

Does anyone have issues with formula foaming in the bottle like this? Breastmilk does not bubble at all. Using Lansinoh nipples on Pigeon bottles, Kendamil Organic formula. Not overtightening the collar. Vent hole is in line with nose.