Glass tile or white subway tile with an accent color running through it.

Any suggestions of colors?

A nice glossy taupe - pick a shade from the taupey gray in the counters or from the floor. I'm thinking something like this: http://houzz.com/photos/210045. Or just a simple glossy white subway tile. Brick pattern or herringbone. Orrrrr, if money isn't a consideration, continue the stone from the counter up the wall.

http://houzz.com/photos/210045

Not sure if the previous link worked...

What's the average price range on something like this?

It worked thank you!