German vehicles in factories or prototypes used for tests are some of the most popular themes for many modellers. These vehicles were painted in a reddish brown colour that would vary depending on the factory; it served as a primer and in some cases, towards the end of the war, was also included into the camouflage. This set includes 6 colours necessary to paint vehicles in a red primer using the colour modulation style, shadows and highlights with subtle variations in tones to be able to apply the modulation quickly and precisely. These colours are acrylic, are dissolved with water and can be used with an airbrush.