Farrow & Ball offer advice and colour suggestions here: http://www.farrow-ball.com/light-affects-colour/content/fcp-content worth a read if you haven't already :)

As it is west facing, I imagine you get lots of beautiful daylight? The downside of dark counter tops is that they actually show lint & dust a lot more than a lighter worktop. I would advise getting a dark piece of plastic or tile & leaving it in your brightest part of the room for a week & see how much you have you polish it up to get an idea of if it will be practical for you. The upside of lots of daylight is that you can still go for warm undertones & they won't age looking yellow as they get older, I would be tempted to do a warm grey base & lighter top in your space, a tip that we don't do in the UK enough is boxing in the space above the wall units, by doing that it will make your ceiling look higher & the space feel bigger, some MDF & a splash of paint will give you the look for minimal cost, you could even or handles in some of the space to give the illusion of custom cupboards are there. Finally I would do a porch light & be brave with brass finishes. A west facing room is such a treat I would be tempted to give it some wow factor in the finishes to make it feel like a retreat.

Hi. I agree with jacksplash and Man About the House - hopefully OnePlan will find you, because I'm worried about your layout. Some of the figures are difficult for me to read on your floor plan but I'm thinking about all the doors and where they lead and the traffic flow of people. Is there room to get around things, especially, say if the fridge door is open? Can someone get by or do they walk in front of the oven? If someone's cooking, is there room? If someone is at the sink, can another person walk by? If people are sitting at the new rectangular dining table, can you get passed to that side door, the double doors, or the door to the stairs? With the big fridge in that spot I'd do a practice and erect cardboard boxes that equal the depth of the fridge and more that represent the island and see if there really is room for it all. Heres a helpful blurb in case OnePlan doesn't pop in: http://www.metric.org.uk/kitchen-planning (Maybe my username should be "killjoy"?!)

I know it sounds funny but a pale green grey would works well with the cream as it could bring the tone of cream down to make it feel more white. Here are some examples for you to see It would still depend on the tone of your grey wall tiles as if they are a more blue grey i agree with Rukmini Patel Interior Design that a blue would work well too. Here are some Farrow and Ball colours that could work and you can get sample pots off to test. Which you can then colour match to a dulux or a valspar paint