Shvegal,
With all due respect to Brian Peters, there is good evidence in the link that you posted that at least the early cars had dark grey rocker covers, possibly DB164 like the inside of the trunk possibly with a different gloss.
Since we have no serial number break showing it changed to Black, at this point, I choose to believe that the rockers were dark grey all the way to the end of the Pagoda production.
It is hard to tell the difference unless you are looking for it.