Your teacher can tell you what it is more than likely, and whether or nor it's time for a proper rehair. Then you get to get into the fun stuff of picking hair, meaning white mongolian or siberian, black, salt & pepper, or perhaps you'll be one of the rare red-hair cultists.

there are more flavors out there, and be sure to get your hair done by someone who speaks bass. Unlike basses, bows themselves are easy to do long-distance.
Enjoy, and g/l!
John