New granite discoloring. What's wrong?

Your installers/place of purchase should have told you whether they sell sealed or unsealed granite...bad business when they do not tell you..most good dealers will seal the granite they install. Just let it dry out...then get a cleaner and a sealer..it is easy and does not take up a lot of time to do this...sort of like spray on wax..allow to dry a bit then buff it out..easier than a car. You can buy all kinds of sealers from hardware stores...place of purchase of granite...and even some grocery stores in my area are starting to carry it.