He was tossing a blue disc, then catching it when it snapped back at him.

The blue disc of the world, unrolling slowly as the moon rose, looked outnumbered, "It's all too big."

The star is yellow on a blue disc which overlaps the green and red stripes.

She could make out vague whiteness across the blue disc.

Four blue discs surrounded the rectangle, one at the mouth of each walk.

On a blue disc within a white edge, a gold lion's face all within a red border.

Pulsate: Touch the blue discs before they change position.

He handed Jonnie a little blue disc with a pin on the back of it.

Again the blue discs sped from the tunnel walls.

The original plaque was a blue ceramic disc approximately 40 cm in wide.