Factory paint code, paint name, year, make, and model information about your car is needed. Please note this info in the "comments" section as you are placing your order. Automativetouchup has provided a good source of information about paint code locations, please click on this link:
Paint Code Locations, Color Codes
If your car is over two years old or has been under severe weather conditions, it has probably faded from the original color code and will need to be taken to an auto body paint shop to match your car's exact color. In that case order your spoiler without paint.