It makes for some cool effects
How to Change the Color of an Object in Photoshop | Adobe Photoshop Tutorial
Colors are an important aspect of any art, photo or design piece. Sometimes you feel like a certain color just doesn’t belong and you want to recolor it. You can easily do this in Photoshop, even without manually erasing and recoloring.
Photoshop has a feature called Replace Color. It’s a quick way to swap colors if you find something needs changing. It should only take a minute or so once you get the hang of it.
Here's how to use Photoshop's Color Replace feature.