Stool gets its typical. While red semen can be alarming, the cause is usually harmless (benign), especially in younger men. As bile travels through your digestive tract, it is chemically altered by enzymes, changing the colors from green to brown. If you have white stool, you should see a medical professional right away. Learn more about what causes this common eye condition and how to tell whether you can distinguish between certain shades of color. · is it red or is it green? Bile is a digestive fluid produced by the liver and stored in the gallbladder. This could be caused by an infection, jaundice, or the presence of vitamins or medication in the semen. A lack of bile causes white or clay-like stool. · white stool isnt typical. Yellow or green semen. This could be caused by inflammation of the prostate or the glands that help produce semen. That may mean a serious underlying problem. · stool color is generally influenced by what you eat as well as by the amount of bile — a yellow-green fluid that digests fats — in your stool.