The standard color of your urine is referred to by doctors as urochrome. Urine naturally carries a yellow pigment. When you're staying hydrated, your urine will be a light yellow, close to clear color. Why Is My Urine Yellow After Taking Vitamin B? This Gut Enzyme Helps Turn Urine Yellow and Affects Our Health, Too NLM Musings from the Mezzanine Bright yellow urine: Colors, changes, and causes Renal Glutathione: Dual roles as antioxidant protector and bioactivation promoter ScienceDirect Supplements and Urine Ask The Scientists