You are going to have to leave your comfort zone on this one. Walnut is "brown", you have "pink" as a counter top. I would suggest going with another version of the colours already in the room. you have gray/beige and white. I would hesitate going white...but it can be done. You can move into the grays and be very happy (it would look very modern) or you can move into a beige that holds a hint of pink in it (not pink...but a blush of warmth). Or you could go really wonky and add in something like a brushed stainless steel look to the cabinets and have it go "space age". There are specs of blue/gray in this counter top. The next think to look at is an "ashwood" or dark gray wood presentation that has some blue in it. It would lighten the space yet still add drama that dark cabinetry offers.

Take photos of your cabinets and space with you when you shop for granite. Another Idea is to visit Home Depot or Lowes and buy some Single 12x12 granite tiles as samples just to get an idea of what might work. They have lots of choices. Not exactly what you want but close enough to help you zero in. The tiles can then be returned.

quartz is a man made product using natural stone and a resin material. No sealing and is stain proof. I have had my granite for 10 years. I have never had a staining issue and set hot pots down on it seldom, but it has never bothered it. I've sealed it maybe 2-3 times over 10 years. granite really doesn't stain. So, compared to quartz, they are very similar. It all comes down to what you like the best.

Hello Waheeda, The tile looks great. Usually designer tiles have a glossy finish and they are easier to clean. Having said that, we prefer a cleaner surface with minimal lines for a kitchen backsplash. We have used a similar one recently from Kajaria. Ask for DCM 3105 at your nearest tile store. For you query for grouting, they require much lesser grouting as any other regular tiles. The design is made in a manner that they look like small glazed tiles put together. Thanks, Nitin CORNERSTONE DESIGNS Bangalore.