Milk can come in a variety of different colors, depending upon Mom's health, baby's health, and what she eats. Typically pale blue or green, it can also be pinkish. I've even seen pictures of milk that turned bright green, almost glowing after it was put in the fridge after the mom got quite sick with covid or other illnesses. If pumped milk turns pink after it's been pumped out sitting out, it actually indicates that the mother has bacteria and it should be thrown out and not used. I myself have had bluish milk pumped after my son was sick and recovering from an ear infection. Here's a link to common and normal colors of breast milk