A soft, warm grey shade would look lovely, and can be as dark or light as you want. A warmer shade will work with the brown stained wood floor, and the grey will complement the black granite. You could have an undertone of green, blue or tan if you didn't want a pure grey. And it would look nice with any silver metal hardware, either polished or satin/brushed, so you could choose pewter, chrome or nickel. It would still work with white trim too.

Brown can be tricky colour to match with vibrant colours as Brown is not a fun colour. Brown and its shade are for timeless classic designs. It only goes well with conservative colours like white, black,grey and glass. Couple of options below

Thanks Nitin and Ideal Lifestyle. Sorry for the late reply, I don't know why my net is not working properly from the last few days. Ny way, I actually see the foating kitchen cabinet in google image. May be that it not good for our Indian kitchen. I love the drawyer system that offered in modular kitchen cabinet. But at the same time I have no patience to dry the the kitchenware (cookware/dish etc.) after washing. Now we put it on the steel dish rack (commonly visible in Indian kitchen) hanged in our wall after every wash, which no need to first dry and then store. But I want to conceal the dishes, pressure cookers, kadhais in drawyers. In my dream kitchen big kitchenware should be concealed, hanging cookware like saucepan, tawa, frying pan would hang on s hooks in railing and open shelve for the dry goods in glass/tin/ceramic jar.

Kanupriya, Well when you say 'it can be touched' I hope your don't mean you are going to let such a sober place be taken over by this piece. I would recommend you suggest vinyl stickering to your clients (for center 4 shutters at least). That should leave the client with a flexibility of removing the vinyl when they want to. You can take the cues from the color splash and decorate appropriately. Thanks Nitin Cornerstone Designs, Bangalore.