Apologies for the silly question but this is really a dilemma for me: how do I paint tractor treads? Tanks are fine; I can do those: they are usually dark metal, so normally I just use a brownish black, wash with rust colors, rub graphite/silver pencil to it. There are some exceptions, but in general, they are fine.
However, the D7 seems to have an aluminium/steel colored track- which I have no clue how to paint. I was thinking painting them grey, and then metallize them with graphite; the "aluminium" paint colors are normally too shiny for this sort of work. (They don't shine, they have a very dull, flat colour.)
So I would really appreciate if someone could fill me in how to do civilian tractor treads

Thank you.