There are many examples on houzz of contrasting counters for perimeter and island. For example butcher block on island and stone on perimeter or a solid color on one and something with movement on another. I would only mix two stones if one had movement and one was fairly solid. The stainless on perimeter and something else on island sounds good to me. Here is a pic of stainless counters with what looks like a stone breakfast bar. (I hope I understood your question right). http://houzz.com/photos/3137660

The floor and cabinets almost look like the same color. I would lighten the cabinet color - making sure it doesn't clash with the floor color. I would also modernize the open cabinet above the microwave by removing the moulding, or adding a door. I'd find an inexpensive countertop that pops against the wood (or painted) wood cabinets. Change out the cabinet glass to clear, and do a new backsplash that brings it all together. And, finally add a cool light fixture, and maybe a kitchen rug.

~$400 including expedited shipping. My GC just had his regular countertop guy do them, which wasn't great.... he had trouble making clean cuts. If I were going to do it again I would have pressed for someone with expertise to cut them. You can see in the image that the facing is not made of the stone peak, because too much was broken during the cutting to make the mitered edge. I'm a little bummed, but mostly pleased with the surface (which is the important part) thus far.

Thank you for all your comments. We have been looking at the black granite composite made by Franke but is triple the price of Blanco. Was concerned the black composite would scratch etc. will probably go two stainless steel, because as previous poster mentioned the blacks are never the same. Sure I will be back for more help or advise.