It's dead easy to be honest. The way to do it is to work with layers so that you can control the colour saturation for the individual parts of the picture. As I say, I didn't know that when I did that photo above which is why it looks a bit crap. It's not bad but if you do everything on one layer you have no room for manoeuvre.
An unquestionable set of DJ musicians insignia from my collection. Note how the strap also has a button sewn upside down on the top of the strap for attachment to the swallows nest. I feel very confident that these were worn by a DJ member in the period.