A dark gray mask showing all of its molars is also strange.

When his familiar voice came from behind the gray mask, she whimpered, "Karl?"

She glanced back at McCoy, his face a gray mask of sadness.

Though his face was a grim, gray mask, he could not keep the surprise out of his voice.

The detective just stood there, his face a grey mask of ignorant wonder.

His face was a gray mask, and his legs appeared wobbly.

And now that handsome face was a dark gray mask of baked-on blood and ash.

An ugly lot, they were, with gray masks on their faces.

One man wore a gray and white mask with the face of a cat.

Very slowly his face drained of all expression and became a dead gray mask.