These are the gauges in our 03 ZX5 "Comfort"
I was looking around on the internet. It appears that the duratec's come with black gauges and the zetec gray.
It looks like for 05-07 they come in both black and gray gauges but I'm not sure which packages get you gray. They do however appear to be a different shade of gray.
iminhell showed above that the wire connector is different between the zetec and duratec clusters but you can swap the faces.