How to fix dull spots on newly sealed Granite (http://tanbrown.org) Counter (http://GialloFiorito.com) top?

Hi, our new Granite (http://tanbrown.org) (imperial brown) Counter (http://GialloFiorito.com) top has few dull areas:
1) around seams (about 2 " wide on both sides of the seam)
2) on the backsplash around electric outlets (about 6 " round)
An installer applied Ager sealer to lighter Slabs (http://www.VerdeUbatuba.com) and (http://maplered.com) clear sealer to darker Slabs (http://www.VerdeUbatuba.com) .
We were told that sealer will cure in 2 hours. We waited about 4 hours before placing objects on the Counter (http://GialloFiorito.com) .
I started installing electric outlets on the backsplash after waiting for 4 hours...I suspect we should have waited longer.
I guess that dull spots appeared because while installing outlets I could have touched uncured spots around the outlets and (http://maplered.com) now they look dull.

Can you tell how to fix these dull spots?

Thanks for your help.
Gene