Testing out Auto Paints & Primers on PP and PS plastic

 Sometimes a seemingly inconsequential circumstance (the case in point being my inability to find a specific hobby paint color i.e. Tamiya Mica Blue for some recently acquired car scale model kits) will kick off my inane hobby OCD behaviour. With so many miniature projects pending you might think I would just put sourcing the out-of-stock paint on the back burner and concentrate on the huge pile