You want a "quick photoshop" here you are.Originally Posted by Silverad304
Now if you want someone to take the time to do it right...
Clone an area of the truck to remove the side molding.
Select all of the color to be replaced.
Adjust the Hue and saturation.
Adjust the brightness and contrast.
Doing the above will retain the reflections, shadows, and highlights and you will end up with a reasonably real looking rendering.
Something like this:
If the quality of the original photo was better it would even look more realistic.