They look pretty normal to me. The view of the firing area is not that good so it is hard to tell. The plugs you are showing are the fine wire platinem tip that has been original equipment for the Duratec since about 1996. It is a single platinum tip, the center wire. The platinum tip is very skinny and long (the "fine wire"). Some have mistaken this for a badly eroded tip. The color of the tip is very slightly dark, but well within the range of normal. I cannot tell much more without a better picture of just the firing area.
