look (at something) through rose-colored glasses
To assume a generally optimistic and cheerful attitude (toward something); to focus on the positive aspects (of something). Primarily heard in US. I know nostalgia can be misleading, but I really look at my childhood through rose-colored glasses. I think Mary is only capable of looking through rose-colored glasses, like she's in complete denial of the negative things in life!
rose-coloured spectacles
An unduly idealistic, optimistic, sentimental, or wistful perspective on or about something. Primarily heard in UK. I know Sarah looks on our childhood with rose-coloured spectacles, but I can't put aside how difficult my parents' failing marriage was for all of us. Despite doing worse every quarter for the last two years, our boss keeps seeing the business through rose-coloured spectacles. You need to take off your rose-coloured spectacles for a moment and realise that there are serious problems in the world that need fixing.
wear rose-colored glasses
To assume an unduly optimistic and cheerful attitude (toward something); to focus solely or primarily on the positive aspects (of something). Primarily heard in US. Many of us wear rose-colored glasses when we think back to our childhoods. It's part of the reason nostalgia is such a powerful emotional draw. I find it a little irksome how you always wear rose-colored glasses, even in the worst of times!
rose-colored
Of a shade of pink. I'm going to wear a rose-colored dress to the wedding this weekend. We love watching the rose-colored clouds at sunset.