Black ceramic floor tile is tough to keep clean. Even though you would think that the dark color would disguise dirt, it actually shows more on black tile. If you opt for black, you can keep its sheen looking fresh by using a simple solution. Mix 1/2 water, and 1/2 vinegar in a spray bottle. Add a few drops of Castille soap, which is a natural olive oil-based soap, and shake to mix. Spray the mixture on the floor and mop. The mixture will thoroughly clean the black tile, while the soap will restore the tile's natural sheen.