- Facebook enabled users to add a rainbow overlay to their profile photos
- The colors celebrated gay pride, following a landmark U.S. Supreme Court ruling
- Other tech giants such as Twitter and Uber also expressed their support
(CNN)Scroll through your Facebook feed and you'll already see an array of family photos, pouting selfies and delectable dinners. But over the past few of days, there's also been a bright splash of color as users have been updating their profile pics with a rainbow overlay to advocate gay pride.