The 80's Basso mixte I bought for my wife last summer was fitted with a mix of black anodized Zeus,Huret and Campy components.(beautiful lugged Columbus tubing, painted bubblegum pink!) The Zeus crank arms are silver but both chainrings are drilled and anodized. The chain says "KMO Z narrow" and is silver. I don't know if this corresponds to the Zeus 2000 chain in question, but it is contemporary with those components.
Doug Wagner
Richmond "ice rink" KY