How can you prevent teeth discoloration from coffee?

Try a straw: I have seen, mostly young females, drinking coffee though a straw. Especially if they have made the investment in whitening their teeth this seemed to me to be a creative way to minimize the contact of the coffee with the tooth surface to prevent staining.

You can't: Unfortunately teeth do stain form drinking tea, coffee , red wine, as well as some foods that can cause staining. You should try to keep your teeth clean by regularly brushing and flossing and also use teeth whitening technique (bleaching) , done properly by your dentist's supervision.