Some parts places like CARQUEST can take a digital photo of any color and match it pretty well. They can even put in an airosol can. Of coarse a Base / Clear would look better. The prep work for un painted plastic is the most important part.
I bought my Can-Am in brushed aluminum, disappointed. Anytime something rubs on the paint the silver color comes off, and the black paint shows through. now I have a few black spots on the plastic that really stick out compared to the brushed aluminum color.