We would recommend Zinsser AllCoat Exterior Satin (Water Based) or our Kolorbond Aquatek uPVC Painting Kits which have the correct amounts of Kolorbond and preparation products for painting uPVC, PVC, and composite surfaces such as doors and windows. These are available in 2,400+ RAL, NCS, and British Standard colours, including Chartwell Green and RAL 7016 Anthracite Grey.