On one of them a candle guttered and burned blue.

A great flame rose in the midst of everything, burning blue at its core.

The flames gave forth smoke as they burned blue.

All Nan could think of was the old saying, flames burn blue when spirits walk.

The wheels go round without a sound The lights burn red and blue and green.

I threw my hair into the fire and the flames again burned blue.

And those eyes, that brilliant, almost burning blue, could still make her heart stumble.

The wind was a little less strong now, and the sky overhead burned clear and blue.

It exploded from a touch of incandescence and the alcohol burned blue.

They should burn blue with at most a slight yellow tip.