The first pic is the normal form of the skin. The second skin is a Pale Burner. The thrid skin is a Tan Burner. The forth skin is Dark burner. If you have a favorite skin that you just love the style but it doesn't come in the color you want. The burner can help you achieve the look you are looking for.
Outfit: Remex Baggies & Tank top (MenStuff Stop #86) @ Karma's Kration http://slurl.com/secondlife/Lost%20Beauty/93/72/28
Boxers: Monthly freebie Nov2011 @ Vitamen http://slurl.com/secondlife/Japarid/112/162/32
Skin: Loser (MenStuff Stop #25)@ VyC http://slurl.com/secondlife/Goremoor/15/163/2995
Facial Hair: Chin Beard (MenStuff Stop #5) @ Jaryth's Barber Shop http://slurl.com/secondlife/Ippopotamo/170/33/3500
Skin Burner: Skin Burner Tattoo Layer (1L) @ CandyDoll http://slurl.com/secondlife/Supremacy/70/141/2001