All of our plaster lights can be left unpainted, however if you do decide to paint them, it is necessary to prepare them correctly first.
Seal the light with a PVA sealer. A solution can be made up by mixing 1 part PVA with 1 part water. Use a brush to apply the sealer.
Wait for the sealing solution to dry thoroughly. This step is very important.
Apply paint with a soft tipped brush. Apply 2 coats of paint, sanding lightly between coats for the best possible finish.