'71-72 grille correct & alternate paint treatments

[Gazoo]

Hi - I have a '71 that appears to have a thin black line painted on the outer grille surround (its also mostly worn off) but there is definately unpainted aluminum between the black line and the bezel. Most that I have seen have the black trim painted all the way to (but not including) the chrome bezel.

Which is correct and for which year?

Also - anyone have any pics of blacked out inner grilles? or do they just look better in the grey/silver?

Thanks!