If white is 'your' colour, are most of your clothes also whites / pastels? It's not a colour I'd take to heavily polluted areas - e.g. wouldn't take it on a flight or train, but I would take it out for dinner in a nice restaurant.
I feel like white is a no-no for me, as I do like a versatile bag I can take anywhere.
BUT.... if it's not an everyday bag, stick with what you love.
It has the feet to protect it from sitting on a dirty surface, but dirt will still probably be attracted to its base.
I'd think about a bag organiser / base protector to go inside to protect the interior from things you put in it.
Beige would only be a little better, in my experience. Especially the Dior beige, which is quite pale.