If one follows the directions for cleaning 'brand new" black granite tops, there shouldn't be a problem. Now if you buy a previously occupied home with granite countertops that will depend on how the owner cared for them. I personally don't need a "slick shiny" countertop. I want one I can use on a daily basis with out worrying how it looks after I've just cleaned it. I have shown many homes with slick shiny granite countertops that need 'polishing'. Multi-colored is the way I would go. ANy solid will show more indiscretions.