This and other factors appear to contribute to a darker, more black metal feel.

The man set his lantern down and fetched a little cup of dark metal.

And the third was a dragon of dark golden metal.

We came to a door of dark metal and he pressed a stud beside it.

The guardrails were also made from wood and dark metal.

Each of them held a short sword made of what looked to be some dark metal.

Then dark metal fell on the Potomac like huge raindrops.

He hung over the small circle of light in the dark metal.

One instant it was there, a vast sphere of dark metal.

Beyond my room the walls are bare, dark metal, the floor tiled in black.