Is the paper ground gray? I would use a soft palette of color choice. You could use pale gray on other walls and accent in pale yellow and turqoise or soft coral. Would be serene and sophisticated. Keep colors barely there but with enough color to be highlighted. Silver or mercury glass for accents. A crystal chandelier. Sheer silver drapes.

I'd probably pick out the darker grey for the other walls & let this wall be the bright interest. Remember that yellow reflects off itself, so pick a shade or two lighter than the one that appeals to you at first.

Yes the background is silver .. My floor is beige now thinking of changing it to dark brown wooden floor would if be nice ?

I like the light floor. it works with the other light soft colors that you may choose. If you want a softer feeling. If you want more drama for the room, dark floors are a very strong contrast to the wallpaper. You would need to add dark contrast in color choices in other areas of the room in accessories, art or pillow. Colors that are deeply saturated to carry the floor.