For some reason I found this fascinating. By changing the type of paint on the new A380, Airbus dropped 440 pounds off the weight of the plane.
"By using chromate-free paint, engineers got the outer paintwork down to about 350 kilograms (770 pounds), Schoepf said. 'That's compared to 550 kilograms (1,210 pounds) for a plane of this size using other paints.' "