pumping breast milk question

hii mamas! i am exclusively pumping for my daughter and i had a question when first beginning to pump each round almost 3 weeks into pumping .. is it normal for the breast to come out of the boob looking almost clear but once it accumulates in the bottles it’s white ? 🤦🏼‍♀️🤦🏼‍♀️ might be a silly question but i’m curious lol