The color of breast milk is not always white. It may change depending on stimulants such as food, or when you or your baby is sick. So it’s actually normal. Just ensure that your bottles and breast pump parts are clean and you don’t drink alcohol.
Breast milk is not always white. It may be yellow or green also when stored which is totally normal and can still feed to baby.
It's normal for milk to turn yellowish after being stored in the fridge