I have the Subway Ceramics Avalon / Minas with a medium gray grout. And a Shaw's white sink, if anyone is considering that, by the way. (My contractor could have ordered it directly, but at his request, I went through a tile store, and by the time everyone had put their sugar onto it, it was OBSCENELY expensive.) I'm not an installation expert, but at least with the Subway Ceramics, the installers use little plastic spacers between the tiles (I think some others have their own spacers?) when they put them up, they don't do it freehand, so how much grout you get is a function of 1) the limits set by the curvature of the tile and 2) what size spacers they use. So you might be willing to go a little darker with a smaller grout line, or with a handmade tile that refuses to go close together, you might want to stay light. The traditional color is close to concrete. But most modern people don't seem to like that, so do what pleases you!

Many people with Carrara (which is similiar) have chosen Custom Platinum. It's a very light grey that tends to minimize patterns, if that is your goal. But, compare the color to your sample, as your tile may be different.

Jeanette Vey, My apologies for the delayed response, Houzz has not been sending us alerts/notifications. You can go down to your local hardware store/Home Depot or Lowes and ask the tile department for a bottle of cleaner and grout sealer. Clean the tile and grout according to the specs and directions. Follow through with the grout sealer- there should be step by step directions posted on the back of the bottle. Sealers come in spray bottles for an easy DIY project. We always recommend sealing the grout, especially if it is white. As I think of it now, I can't remember us never not doing the sealing process with our backsplashes. Hope this helps! from our team here at The Couture Floor Company. The Flooring Blog The Couture Floor Company

Did you go with a white? Would you mind posting the color you went with and a picture? I actually have the same question and have the samequartz counter top It appears and white cabinets and glass tile! :) Love the white on white look but am a little concerned as my tiler advised against due to cleaning issues with white. What do you think or any on this post think? thank you!