After seeing peoples comments on several similar images here's the scoop...
READ THIS BEFORE COMMENTING PLEEEEASE:
Dye is injected into the egg a few days before the chick hatches. It doesn't 'get in their eyes because their eyes are sealed shut until after they hatch, at which point the dye is already dried. The dye is non-toxic and does not hurt the chicks. It's cute. It's festive. It doesn't hurt anyone... or anything.