Seems like there might be a couple of issues here. I think peaches n cream is the desired color because it's unbleached and undyed (or at least undyed). But then there's the material. Yarn is made of all kinds of materials, most of which would make rotten wicks.
If you've got cotton yarn, I have seen people say it wicks really slow. Also, yarn may be treated with sizing that might make it suck and may be unsafe to inhale. A boil or soak in water might help.