rose-colored glasses, to look/see through
see through rose-colored glasses
Also, look through rose-colored glasses. Take an optimistic view of something, as in Kate enjoys just about every activity; she sees the world through rose-colored glasses, or If only Marvin wouldn't be so critical, if he could look through rose-colored glasses once in a while, he'd be much happier . The adjectives rosy and rose-colored have been used in the sense of "hopeful" or "optimistic" since the 1700s; the current idiom dates from the 1850s.
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
rose-colored glasses, to look/see through
To view events and people very positively, seeing only their good points; unmitigated optimism. This term began to be used figuratively by the 1850s. “I was young . . . and I saw everything through rose-coloured spectacles,” wrote Princess Pauline Metternich (Days That Are No More, 1921). A twentieth-century synonym is to see the glass half full, to see the favorable aspect of circumstances, to look on the bright side. The antonym, to see the glass half empty, is also current. “This . . . group . . . looks at a reservoir that is half full and doomfully declares that it’s half empty” (New York Times, 1981).
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer