Turn a perfectly sound, entrenched business into a blue-sky factory?

Snubbed for the first time in all her blue-sky life–and by a boy, too!

The bluest skies of a blue-sky land curved in fathomless majesty over the yellow valley of the Santa Fé.

There are some business men who look upon psychology as "blue-sky" theorizing or "new thought."

The blue-sky during all these centuries has tinged the shadows outdoors a bluish color.