Urine NOT changing color?

My urine is NOT changing color when I take multi vitamins. I know in the past it has which is normal, but it doesn't now. I take a Women's one a day, a VB12 sup, an iron sup, and a folic acid sup. Still, no urine change. Does that mean my body is craving all that and needs it (so it's not getting rid of it in the urine?)