There are intense, opaque lipsticks, and then there is the Lime Crime Velvetine (P950 at Stuff In Style). This is easily the most ridicuslously pigmented lip product I've ever tried, even more than the OCC Lip Tar or MAC's mattes! It's so pigmented you need a makeup remover just to knock off the top layer. Then you'll need a toothbrush to remove most of the stain left over.
I've had my eye on Lime Crime for a while but was hesitant to purchase due to some of the controversies surrounding the brand. A quick Google should enlighten you. ;) But all that drama aside, this liquid lipstick is quite one-of-a-kind in terms of intensity and staying power. It feels like pure pigment just suspended in oil.