And how to do it?
Open the picture in an image manipulation program - PhotoShop & variants (many digital cameras include software), MS Image Composer is another etc etc.
Choose color from the car body. Avoid highlights & darks - grab a color that looks like it has similar tone.
Change the opacity to 30% or so & paint the section with a suitably sized brush. You will have to play with opacity or double paint it. It is often helpful to zoom to a large size for fine detail like the Fuchs paddles or to edge around the painted crest as above.
Or you can just ask on the internet . . .
Ian