Rubber Side Down, FTW!

I'm a sissy when it comes to my mtb-ing. I've seen enough nasty injuries to know enough to be careful... Y'know, N-shaped collarbones and the like? I keep enough gauze etc in my bag on 'serious' trips (where I can foresee needing it...) just b/c I don't trust anything...

Still... "Prissy" to me, is "oh, I don't want to get my clothes dirty" or "*GASP!* I tore my windbreaker!" nothing you should be wearing to MTB should be that good. Baggy cargos and bleeding forearms and calves ftw. Treehugging... (half crashing and grabbing a tree to stay up) ground-eating (mmmmm taste that dirt!) and RSU maneuvers (Rubber-Side-Up) are my forte... not that I want to... and nothin' like raspberry marks on your hips from sliding. yow. Snot rockets, bloody marks, sweat and tanlines... the 'fake tan' from dirt and dust clinging to sweat... These are a few of my favorite things...

q, though,
I patched out on gravel a couple months ago on one knee, and though I debrided it as much as I could etc, and it healed fine, it looks like it's still got some black tattooing from the gravel debris... anyone know if that ever completely works its way out?