Green towel-wipe the residual water marks on the body
Purple towel-wipe water stains on the side of the car door
Pink towel-wipe car glass
Yellow towel-wipe the dashboard, seats and other parts in the car
Brown towel-wipe the wheel hub
Grey towel-wipe the dust on the surface of the engine
This color is all set by yourself, as long as you don't wipe it down with a towel.

