Bright yellow. In general, taking in more vitamin c than you need will turn the urine bright orange/yellow in color. That just shows that the money you spent on vit c is being peed out! Not dangerous, just a waste of money.
Not yellow urine. Vit c does not cause yellow urine - it's the b vits that do that. If you take too much vit c you will have loose stools or diarrhea till your body gets rid of the excess.