What exactly is a lightscribe DVD writer

I want to buy a DVD writer. And I saw something about a Lightscribe DVD



Specifically a Liteon 20x DVD+R lightscribe, double layer DVD writer



What is the lightscribe capability. I think I saw something about a lightscribe DVD burning a label or picture onto the DVD. If so how does it do color, or am I off base.



Does it also do Cd's

http://en.wikipedia.org/wiki/Lightscribe in other words just a dvd writer that can dvd/cd covers as long as the dvd/cd can support it