Acrylics Vallejo The Vallejo Company was registered in New Jersey, U.S.A., in the year 1965. In these early years it specialized in the manufacture of colors for animated films (cartoons). The most sustained expansion of Vallejo started in the nineties, beginning with the introduction of new products directed at the Model painting and Hobby sector. The company became the first specialist in acrylic colors, with a long and varied experience in all aspects of this branch of manufacturing. Glaze Medium Glaze Medium is a colorless glaze which is used to mix with acrylic colors; improves fluidity, increases transparency, and slows drying time.