Some of the talavera tile outfits offer some simpler, monocrome patterns that might fit your vision for your kitchen. Since I don't have any experience with any of the companies, I won't recommend one over the other, but there are quite a number around if you do a search for "talavera tile." (In fact, there's probably some importers local to you.)
Another place to ask if you don't get the info you need here would be the fine folks over at the John Bridge "Tile Your World" forums:
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