Rather than repainting some of these cars, to differentiate them from each other, I decided to make up my own number roundels for the front and sides, and also swapped around drivers heads from various other cars so they were all different colours. I painted the sides of the rear wing of this car green some time back (for some reason), so I made sure I picked a driver with a green helmet to match. May to a similar colour scheme for the other three, or might just completely repaint one or two eventually. However, that is more difficult to undo if I decide to sell them off.