Facebook will mark ‘Spirit Day’ tomorrow by turning several pages purple and encouraging employees to learn about the event.

Spirit Day, which was created last year by Canadian teenager Brittany McMillan, encourages people to wear purple on October 20th to remember LGBT teenagers who killed themselves after being bullied.

On the rainbow flag, purple represents ‘spirit’.

Users of Facebook, Twitter, Google+ and other networks can use an app to turn their profile pictures purple, while Facebook will also be turning two of its pages — Facebook Diversity and Facebook Safety — purple for the day.

GLAAD has a page with more information (here), or Facebook users can join an event page (here).