She turned, saw how calmly he stood there, watching her with those grey metal eyes which held no center of focus.

Quickly Hero's eyes found the circular plate of gray metal set in the floor.

He opened his eyes and saw a ceiling of gray metal above him.

There was a gray metal swinging door that led to another corridor.

Going to the machine, he ran his fingers across cold gray metal.

She opened a door covered in gray metal worked to look like stone.

Almost always the color is dark gray, or maybe silvery metal.

He had to press himself against the gray metal so that they wouldn't brush him.

There was a second case inside, of smooth gray metal, with absolutely no way to open it.

As though lured by this thought, his gleaming gray metal eyes turned toward her.