Is there a database or source I can contact to locate 1 piece of tile I need to replace due to a chip. Its a 17 x 17 matt white finish, #31070 Appia. I did go back to the original tile store but they said the tile has been discontinued and suggested just trying to find something similar. I am nervous about doing this because the tile to be replaced is right in the middle of the kitchen floor and very visible so I really need it to blend in.