The successive coats of colour must be applied while the precious is still sticky. This white powder I mix with the resin is fumed silica (Aerosil), which turns resin pixotropic. Pixotropism is a quality liquids have when they don’t drip down vertical walls. This is the final support for the different colours and its purpose is to make the surface that will be laminated with fibreglass as smooth as possible. One must not overdo the thickness of the coloured layers without fibreglass, as they are fragile without such reinforcement.