I used a clear plastic (vinyl?) tube as a blow off hose and it filled up with yeast. I soaked it in oxyclean then in bleach solution. all the 'bits' are gone but it still has a yellow tinge to it. is the tube safe to use to fill bottles etc?
Sometimes a bleach solution can change the color of vinyl. If in doubt, do the oxyclean again and then bleach again. If you are still worried I would replace the tube. Spending another couple bucks for piece of mind might be worth it.