We ordered the king size grey and it's darker than is shown in the pics. We use it with 2 twin side-by-side adjustable beds, which fit perfectly inside of this bed frame. We didn't use the middle rails and slats, but were very impressed with the heavy metal quality of the rails. The description of the bed states that it is not compatible with adjustable beds, but it works perfectly for us. I was able to put it together by myself (had to lean the headboard against the wall to attach the side rails), but needed help getting the adjustable beds into the frame.