1- You can't grout over old cement based grout. Do you know the specific grout used? Was it a dry powder you mix with water ? If yes, you cannot grout over grout. You'll have to dig out at least half the depth of the old grout to grout in that area. If you used one of the newer single component grouts such as Fusion, Plasma or Flexcolor, you can grout over grout but they are the only exceptions to the rule. 2- Never heard of such a thing. Do you have any spare sheets lying around? Take one to an artist with a sharp eye for color and ask if you doubt yourself.

I'm no tile genius, but that is great tile! Are there any markings on the back of the tile? Do you have any idea what they are made of? Do you know where the construction job was? I would call either the contractor, builder or owners and ask them about the tile.

Hi All, I love this tile. what tile is it? and what wall color is it if you can just name some shades to help me narrow down? I don't know the names as I got the pictures at a friends who only recently bought this house. We are getting Cherry glaze cabinets with Black pearl countertop. Would this tile look good? Thanks

I like the hexagons... but I would use plain subways in the shower. Let those hexes be the star!