Milk is greenish (possibly from taking Berocca?) -- is it ok to give baby?

Depending on what you consumed, breast milk may change colours accordingly. http://kellymom.com/mother2mother/what-to-expect-when-pumping/ Different colours of breast milk

Yes, it is okay for milk to have a greenish or bluish tinge depending on the percentage of foremilk inside. https://www.breastfeedingbasics.com/qa/color-breast-milk

thanks