Facebook has responded to current US events by letting users celebrate pride.

In a landmark decision for the gay rights movement in the US, the Supreme Court ruled by a 5-to-4 vote on Friday that same-sex couples can marry nationwide, officially declaring that the US Constitution guarantees a right to same-sex marriage. The ruling will therefore strike down gay marriage bans that were still in effect across 13 different states - like Ohio, Tennessee, Texas, and Michigan.

To celebrate the historic ruling, Facebook has just launched a rainbow-coloured filter for profile photos. And it is pretty cool looking. While signed into Facebook, go to facebook.com/celebratepride. You should see an option to superimpose a rainbow effect over your existing profile picture. You'll also have the the ability to edit the photo's description (by default, it includes a link to the filter page).

The rainbow - in its flag form at least - is most widely known around the globe for representing gay pride. Thus, if you support the US Supreme Court's latest decision, you might want to take advantage of Facebook's new photo feature.

The whole process takes only a few seconds and is automatically posted to both your profile and timeline.