Reclaimed wood ,use pallets you could take apart and nail them up .Could be free if you look on Craig's list for free pallets

White, blue patterned, or even a bright accent color like red or yellow http://houzz.com/photos/10435177 http://houzz.com/photos/124382 http://houzz.com/photos/44046

A combination of Offwhite, Beige Upholstery and dark shades of wood would look good. Provided you keep the wood minimal . The floor can also be a similar shade of wood . Remember whatever you do, make it look rich and elegant, only then will you be able to pull this look off. I am assuming the your ceiling is considerably high as well. Paint the walls and ceiling in offwhite shades with only the feature wall grey

Hi Samata, You can go with the cornice ceiling if you have some other source of light in your room other wise you can go with cove lighting too if you don't have the specific source of light apart from this.Since the texture of the sides of the doors are dark so it would really goes better with dark shaded cornice ceiling style. Further it goes matching to your flooring design too. You can also add some finish to your wall like in the above ones to bring out a good look to your room or passages. As the colour of the cabinets matches with the flooring style too. i hope this will help !