Monument Hobbies - Pro Acryl 1 Step Paint Set One - 12 ColorsPRO Acryl 1 Step is formulated to give you vibrant colour in one single layer over a bright base coat. These colours also give you an initial contrast between the darker spots on the model and the brighter highlight areas, without even thinking about it! Simply apply PRO Acryl 1 Step colours over a model primed in a bright colour, like white, or over a zenithal primed surface with a bright colour over a darker colour (white over black, for example). 1