Facebook is honoring today's the same-sex marriage ruling by letting users add a rainbow filter to their profile pictures. Here's how to do it to your profile picture.

It's really as easy as a click.

All users need to do is go to their profile picture and click "add filter."

Their are over 189 million Facebook users in the U.S., of which 6 million identify themselves as gay, lesbian, bisexual or transgender according to Facebook.

Facebook says that within an hour of the Supreme Court ruling, 3.8 million people in the U.S. made 10.1 million interactions (likes, posts, comments, shares) about the decision.

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