Place whole perfect wafers on 2 trays; one with wafers facing up, the other with wafers facing down. Each tray should have the same number of wafers (35 to 40). Brush wafers (round side up) with egg white and sprinkle with sesame seeds. Set aside. Make frosting and color with red and yellow food coloring until desired American cheese color. Set aside. To color coconut, place in jar with several drops of green food coloring. Shake. To assemble cheeseburgers, use dab of frosting to glue grasshopper cookie to wafer (flat side up). This is your "burger". Now spread frosting "cheese" on and sprinkle with green coconut (lettuce). Dab with frosting again and top with sesame wafer. Repeat until all "burgers" are made.