You recently purchased a vintage matte finish Mercer tile The raised forground areas seem to have darkened from a nice tan color to a very dark brown over most of the tile Any cleaning ideas?

Answers.com > Wiki Answers > Categories > Hobbies and Collectibles > Arts and Crafts > Ceramics and Pottery > You recently purchased a vintage matte finish Mercer tile The raised forground areas seem to have darkened from a nice tan color to a very dark brown over most of the tile Any cleaning ideas?