Let's face it, our bodies are weird sometimes. They do weird things, and occasionally in miraculous ways. I mean, my body can somehow stand up to 45 minutes of being put in a series of different stress positions if I call it "doing yoga" and think it's "for my health."
And my body isn't even meant to produce new life! The things a body than can host and develop a new life can do just amazes me. But producing blue milk is a new one for most of us.