i think youre referring to tighty whities however if they arent brief style underwear and that only goes for men....it doesnt matter. but no color does not matter. in fact ive heard its better for women to wear white cotton underwear as it has less incidence towards ph imbalance
I don't think so, you can wear any colors.
Nope.You just do it.
I always thought it was made fun of it, if men wore them. I wear white underwear myself, sometimes. My husband doesn't wear white underwear, just colored boxers.
It is, when it's dirty