BMW Genuine Touch-up Paint Stick Platinum Bronze Metallic code A53 BMW Genuine Touch-up Paint. Platinum Bronze Metallic Paint Code: A53 If you are not sure about the exact color, please send us your question and we can help you to find the exact color of your car. The package contains 1 bottle (12 ML) of touch-up paint & 1 bottle (12 ML) of clear coat.