'69 hood scoop question

Hi,
I'm detailing a set of the turn signals that mount on the back side of a '69 mustang hood scoop (so the driver can see which way their blinkers are blinking).
I was wondering if any one knew what color the indents in the chrome on either side of the light should be. I think it should be argent or black, but I'm not sure... Also what color should the housing be?

Thanks,
Efren
 
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