I think she may have been referring to what is called a "French Pattern" which looks like a random mixture of square and rectangle tiles, often in travertine. However while it looks random it is actually carefully planned, and the tiles are made to a consistent thickness. It also depends on the type of tile that you are using. Many traditionally hand-made ceramic tiles have a natural variation, which adds to their appeal and visual interest. Other types of tiles, such as your porcelains are much squarer, flatter and almost identical. I would suggest that you go with your your choice of grid pattern, as laying a random pattern has too many risks (plus your tiler will hate you and charge lots extra). Be very careful about the selection of your tiles depending on your preference for a rustic more organic look, or a hard-edged architectural look. Make sure that the surface that you are tiling to has been properly prepared and is flat, smooth and true, as your tiler will not be able to correct imperfections if you have a bad wall. Best of luck, Dr Retro of Dr Retro House Calls

This is a very personal choice as dreamer mentioned. You can order tile samples from tile cloud or TileMall for $15 for 5. Pick some options you like and put up in the kitchen next to the other elements. You will soon know which one you love the most 👍🏻

You can’t go wrong with white. I always suggest match to the wall colour or the trim colour.

I'd say a charcoal -- you don't want anything too white or grey IMO , or it will be overpowering in an underwhelming way , and most other tones either clash or will look cold , or both .