Try searching the site for the link to the old cs registry that someone from Sweden ( IIRC) had posted that info. It had an actual color chart , production, year,etc. just for e9s.
Steve had it, the link, on his posts. Maybe he or Dang has the original from the old website?
Certain lighting can play tricks on colors; especially the blues and greens.
There were one year colors for certain models.