There was no light but that from a small blue bulb plugged directly into a floor socket.

There was this about the blue bulb.

He opened his eyes upon a small room lit by a penetrating blue electric bulb.

"I supposed that this desk lamp would have a blue bulb, too."

"He crashed the lamp and broke its blue bulb, thus rendering a valuable service to a criminal scheme."

Abruptly it was out, and in sudden succession the blue and green bulbs winked.

The shelves behind the bar were lit with soft blue bulbs.

The ultraviolet radiation light with a 125-watt blue bulb to fluoresce hair, fiber, and body fluid.

I put the blue bulbs in the garage where no one cares.

The carriage light came on suddenly, a single blue bulb, and someone drew the blinds.