Depends on condition and which part your talking about.
You should use a paint suitable for plastics, I think there is a product in the states called "sem" I see alot of people using, rustoleum also make stuff suitable for plastics with a inbuilt primer which negates the need for plastic primers.
If you just want to freshen it up give them a good clean with warm soapy water,dry and then use a furniture silicone based surface shine
Comments
You should use a paint suitable for plastics, I think there is a product in the states called "sem" I see alot of people using, rustoleum also make stuff suitable for plastics with a inbuilt primer which negates the need for plastic primers.
If you just want to freshen it up give them a good clean with warm soapy water,dry and then use a furniture silicone based surface shine