Sometimes when I masturbate, my cum looks more yellow than white. Is this normal? Does how aroused you are affect the color of your cum (the more aroused you are the whiter your cum is)?
Some yellow color is normal -it's part of the mixture, and the mixture can vary from time to time for lots of reasons.Also, if you see it against a white background it looks a lot yellower than if you see it against a dark background.
I found that my cum tends to look more yellowish if I go a long time between ejaculations. Like if I don't ejaculate for a week or so it will look more yellowish than if I ejaculated everyday. The yellowish color is most likely caused by either a higher sperm concentration, or some color change in older semen.