FIELD TILE OPTIONS
You love Oscar & Izzy Deco tiles but you need to figure out field tile...What you should note: Our tiles are on DalTile bases, so an Daltile will match as far as thickness. We recommend this collection.
Home Depot carries a line called Restore, and you can find it here.
Lowe's carries a line of American Olean 4x4 tiles that also match, so check there for variations of white.