i created this design 2 days ago...
the tagline "be a green team" created by the event organizer AVASARA
my concept, piece of leaf on ericsson tree is to visualize each person as an ericsson green team
i create the identity of 'go green' by using the ericsson logo as leaf image
to get the green team image or go green image, i gathered all the leaf and became ericsson tree