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 all black kitchen looks scary as. Maybe because there's no lightness in there at all.

We are planning a new house, and have chosen a soft grey melamine kitchen with perfectly plain cupboards, and darkish handles with coppery hightlights. The bench-top is a new ceramic tile type of material in a slightly darker grey/concrete color, with coppery highlights through it - very nice. We have discussed having the center island a darker color as this is very visible from the dining room, and thought it would be a nice feature. There will be a copper colored Formica under the servery for a highlight, and the cupboards facing the dining room on each end of the unit will be the darker wood or melamine. The only thing we have been offered to use for the cupboards and each end on the unit is charcoal wood grain finish melamine, but now we are getting cold feet. Has anyone seen this used, and would it look a bit cheap...? Would it cost much more to use a proper wood...? raewyng

Hi there. Airy concrete will create more of a contrast with the floor, tie in your white cabinetry better and it will be easier to work with in an open plan. I would actually ask you to consider Cloudburst concrete, the warmer tones will tie in better with your brown floor. https://www.caesarstone.com.au/colour/4011-cloudburst-concrete