This was just posted in another thread. Here would be a suggestion for an all white kitchen. I think it's handsome.

Backsplashes in all-white kitchens offer a great opportunity to add some color. One of the newest trends are cement or encaustic tiles. Here is a white kitchen with gray and white cement tiles:

Chestnut Street · More Info

Or you could use a bright color ceramic tile:

eco+historical Downey · More Info

Black tiles are a dramatic and classic look:

2009 Southern Accents Showhome · More Info

Weathered/used brick is a beautiful complement to white cabinets and countertops:

East Bay · More Info

This kitchen is all white with snappy copper and turquoise accents. The arabesque tile works wonderfully with the copper and wood.

Mediterranean Kitchen · More Info

My sister did a mother of pearl small square tile on the backsplash of her all white kitchen and it is stunning. Here's a picture but what doesn't show up is the pearlescent beauty of the tile or the slight color changes within the tiles. So there's hints of yellows, greens, blues, purples, grays, but overall it reads as white.