10th Anni was a very unusual thing - it was not a specific model, but only "jubilee" colors that could be applied to every available "top" model; I've already seen in these (beautiful) colors Corsa Extra SLX, TSX (in both geometries: road racing and Century), 753, Grand Prix ... the list of "trifles" options in these models was impressive. "Joke with paint" could not necessarily have been caused by "noise on the links" ... sometimes the color shades changed every season - if employees changed at a similar frequency then ... well, someone took a shortcut.