Is it significant if a B-complex vitamin stains urine?

My sister told me that if my urine is brighter yellow than usual when taking my B-Complex vitamins that it means that I don’t need them.

Personally, I feel a tremendous difference in my mood and energy when I include them in my vitamin regimen compared to when I don’t. Could be placebo, but I am a smoker and I drink a lot of coffee, both of which I’ve heard deplete B vitamins from the body. That has always lead me to assume that supplementing isn’t a bad idea.

Am I wasting my money? Should I just not take them?