All this talk about pupil dilation being more obvious with blue eyes (and thus an attractive trait to possess), yet I haven't seen anyone comment on darker eyes

All this talk about pupil dilation being more obvious with blue eyes (and thus an attractive trait to possess), yet I haven't seen anyone comment on darker eyes tending to nearly always look dilated, and therefore less of a threat. For a couple of animal-world examples, take the black Labrador Retriever - the ones with black eyes look more playful than the ones with intense looking brown eyes, when outside in the sun. Blue eyes in the sun would look piercing (and therefore more threatening) compared to dark brown eyes. This is super easy to see in Siamese cats, both because of eye colour, and the extent that their eyes can dilate. You can also see how blue eyes are often savagely played up in Viking imagery. So while there are arguments to be made, there are also counter points that should be taken into account.