My DS wire loom bracket is definitely not orange. It looks either black or dark metal grey colored. Not to say it couldn't have been changed out, but is it possible that not all of these brackets were orange? Also, what color are the engine lift brackets supposed to be. Mine were still on my car and in my old photos they look like they were bare metal.
The plug wire supports were part of the engine as received, and were painted orange with the engine; see Section M35, sheet A14, View "A" in your Assembly Manual.
The engine lifting hooks were also part of the engine when it was painted, and on an engine with an iron intake, they should be orange.