Once in a blue moon.
being blue in the blue hour, and then:
'**** it to blue blazes!' - out of the blue,
one may be just out of the blues.

For the true blue feeling gone,
walking away into the wide blue yonder.
leaving nothing but the blue devils themselves
who just keep on talking a blue streak
till one gets into a blue funk.

Like blue blazes, black-and-blue again
one gets stuck in one's own blue chamber
between the devil and the deep blue sea,
being blue around the gills,
keep on listening to the blue note
over and over again.