Those of you who are still learning the basics of Photoshop will appreciate the beginning of this video, and if you’re a bit more experienced, the second half may jog your memory a bit. Though the beginning of the video is about changing eye color, the rest of the video covers selective color manipulation more generally.
This video contain a free stock photo that I downloaded from Dreamstime which you can also download and play with if you’d like. You can download it here: EXAMPLE IMAGE