[…] a god in an unblue sky.1992, Susan Burmeister-Brown, Linda Davies, editors, Glimmer Train Stories:
Soon an associational chain reaction occurs that stains blue all that has remained unblue...1997, University of Arizona Dept. of English, Sonora Review:
2 more examples
A philosopher, busily sorting the world into the blue and the unblue, tells us that some ink is blue. We look at the ink one way, and it looks blue.2000, Charles Travis, Unshadowed thought: representation in thought and language:
Mind you, if they fly in downstairs, they are quite happy to settle for unblue mangoes.2007, Barbara Blackman, Bryony Cosgrove, Judith Wright, Portrait of a friendship: