Pebeo porcelaine 150 paint opaline blue porcelaine 150 provides professional results without the need for firing colours are ready to use from the pot and are intermixable for infinite shades leave to dry for 24 hours then place into a cold domestic oven take the temperature to 150c 300f and bake for 35 minutes to fix the colours colours are water based non toxic and can be applied to any heat stable surface from porcelain to copper tin or even glass resistant to detergents and solv