A girl cheers after crossing the finish line of the Color Run at Sydney Olympic Park Feb 10, 2013. According to organizers, more than 20,000 runners completed the 5km course around the Sydney Olympic Park precinct this Sunday, being covered in blue, pink, orange and yellow powder on their way to finish line. [Photo/Agencies]

Runners cheer after they finish the Color Run at Sydney Olympic Park Feb 10, 2013. [Photo/Agencies]