i had a go with some of the stuff halfords have for plastic painting on the upper part of the dashboard, on the can it said to use some of the surface cleaner, so i got some of that too, and it worked fine. You have to make sure you dont spray to close to the plastic otherwise it goes a bit funny. The upper dashboard i was painting was in grey as it was out of an rt, but wanted it black for my 16v (old upper dashboard was runined by previous owner), and it looks fine after painting (smelled for a few days of solvent mind), and when i took the original dashboard out i noticed that they are painted out of the factory as its grey underneath!!