Photoshop Tutorial

During the process of editing my Man of la Mancha project I came across a great tutorial to make just one color in a picture stand out. Although this effect has the danger of being super cheesy, I've also found some really cool ways to use it I'll try and upload later (but because they're photoshop images they might be too big). 


Here is it: http://www.youtube.com/watch?v=Jk0_vYsZYQY 

and there are some cool examples that ARE NOT MY PICTURES! ^^