 The bodywork of the BT19 is glass @-@ reinforced plastic , finished in Brabham 's usual racing colours of green with gold trimming around the nose . Although the science of aerodynamics would not greatly affect Formula One racing until the 1968 season , Tauranac had been making use of the Motor Industry Research Association wind tunnel since 1963 to refine the shape of his cars . Brabham has attributed the car 's " swept @-@ down nose and the upswept rear lip of the engine cowl " to Tauranac 's " attention to aerodynamic detail " . During the 1967 season , the car appeared with small winglets on the nose , to further reduce lift acting at the front of the car . 
