rose-colored glasses

Etymology
Phrase appears as early as 1830 according to OED. From rose-color or rose-colored (meaning "pleasant"), from the notion that roses are widely regarded as uncommonly beautiful.

Noun

 * 1)  An optimistic perception of something; a positive opinion; seeing something in a positive way, often thinking of it as better than it actually is.

Translations

 * Catalan: ulleres violetes
 * Czech: růžové brýle
 * Danish: rose bril
 * Estonian: roosad prillid
 * Finnish: ruusunpunaiset silmälasit
 * French:
 * German: rosarote Brille
 * Irish: spéaclaí bándearg
 * Italian: gli occhi di un bambino, occhi di bambino
 * Japanese:
 * Maori: te paki o Hewa
 * Polish: różowe okulary
 * Russian: ро́зовые очки́
 * Scottish Gaelic: speuclairean bàn-dhearg, speuclairean pinc
 * Serbo-Croatian:
 * Spanish: gafas violeta, gafas rosadas
 * Swedish: (se något i/genom) ett rosa skimmer
 * Welsh: sbectol-lliw rhosyn