Approximately 1,000 people gathered at Acalanes High School on Tuesday night to hold a vigil to celebrate the life of Brett Olson.

Olson’s body was found Sunday by people fishing in the Sacramento River nearly a week after he went missing during a Labor Day tubing trip with some of his friends.

Olson, a 2010 graduate of Acalanes High School, was remembered by friends and family as a kind, confident and fun-loving guy. Many in attendance at the vigil wore bright colors as a sign of celebrating Olson’s life rather than mourning his death.