Yes, light grey painted walls. It is a cool neutral. Many accent colors can go with it. I also have rooms with grey contemporary designed wallpapper in it in our formal dining room.
All grey carpeting. It too is a cooling color, it does not show marks easily, since most marks are blackish grey from shoes and dirt. Accent colors used in the past, pink, currently using lavender and deep purple and white. If you like pure white in things....wood trim, your doors, or shades, as opposed to off white, beige, cream.....you will really like using grey. I have never liked cream for some reason....always preferred pure white....so this was a good choice for me and was easy to change accent colors through the years.
D in TX