Tint icing. Using Moss Green icing color, tint 1 cup icing light green and 1 cup icing dark green. Tint 1 cup icing each bright green, steel violet and medium purple using color combinations provided. Combine Moss Green and Lemon Yellow icing colors to get bright green color shown. Combine Violet and Moss Green icing colors to get steel violet color shown. Combine Violet, Moss Green and Burgundy icing colors to get medium purple color shown.
If needed, use cornstarch to stiffen icing to medium/stiff consistency.