Orem High students show off their handiwork at Orem City Center. Just when yellow ribbon appeared to be in short supply, more than 100 students from Orem and Mountain View high schools found a stash. With armloads of the ribbon, they spent Friday afternoon decorating the trees, lampposts and stop signs at the center to show their support for American troops in the Persian Gulf, while passers-by tooted their horns to express their approval.