Found an article that said the three grading companies all had a different reasons for the deep brown Harrison. But this was published in 2009 written by Ken Potter. The article also stated that" the darkest ones are worth the most, according to error dealer Fred Weinberg of Ending, Calif. " just wondering if there has been any update on this and if so what it is and if there is any kind of value.
http://www.numismaticnews.net/article/problems_on_edge_damage_or_errors I actually found it on a forum from coin talk titled Presidential Dollar Ulysses S. Grant(Weird Brown Color)