What would be a suitable color enhancer for my honed black granite tiles?

Q. What would be a suitable color enhancer for my honed black granite tiles?

A. Brian Yager (http://www.desertstonecare.com) who we consider to be an expert in color enhancing suggests one of two products as a color enhancer: Enrich and Seal from Aqua Mix or Tenax Ager.  He suggests that you check Lowes or Monterey Tile or any high end tile shop.