I just installed a new granite top on my bathroom vanity. The granite
is a manly beige coloured variety with brown and black specs in it. I
noticed that any water that is left on the surface seems to cause a
darker discoloration on the surface. After the surface is dried, it
seems to return to normal after a few hours.

I this a normal behaviour for a light coloured granite? What are my
options to keep this from happening? I have been searching this forum
and have found many opinions on sealing granite. Can anyone comment on
whether a granite sealer would help in this situation? If so I am
looking for brands I could pick up from either Home depot or my local
granite store.

Many thanks,

-Sean