More ideas from M.B.
inexpensive picture frames of all sizes and paint them the same color as your wall with a high-gloss finish. Cover the wall from top to bottom with the frames randomly placed at all different heights. Feel free to use broken frames as well to add to the mix

You could do this with any color. Just paint the wall & frames the same. How cool if u put black & white photos in these black frames on black walls. A conversation piece for sure.