We just had a bathroom demolished and redone. Problem is the tile company delivered tiles from at least two different lots and nobody noticed until after the job was done. We still have a few tiles in each lot left over. Is it possible to remove a few individual tiles and replace them to get a more color-coordinated look between the lots? Or does removing ceramic tile from backer board not work, presumably because of the adhesive residue making installation of the new tile ineffective?