I recently finished a remodel project and (http://maplered.com) had honed black slate Counter (http://GialloFiorito.com) tops put in my bathroom. A recent visitor spilled something on the Counter (http://GialloFiorito.com) which left it discolored (lighter than the natural Stone (http://g603.net) ). I've tried using the Stone (http://g603.net) cleaner provided by the company I purchased the Counter (http://GialloFiorito.com) top from, but it didn't lift the stain. What can I do to get rid of the discolored areas. Thanks in advance, Chyral.