M-48A3 Tracks what color?

Modeling Subjects Armor
1

I’m building a Tamiya’s M-48A3 Vietnam version what color would the tracks be I can’t seem to get a good look from my book Vietnam Tracks

2

The entire block is black rubber except for the center guides (teeth) and the end connectors. Those are a dark metal color, although the edges that rub metal will shine a bit.

3

Thanks for the help Ron ,was not sure the color .