Yes. Black Rouge is a polishing compound. I use it on a hard wheel( the yellow tripple-stitched flannel kind). I use a medium wheel (white tripple-stitched flannel) for the White Rouge. But I didn't have any luck finding any compounds at a welder's supply store yesterday, or at an industrial supply store that sells everything... Even silver Anti-Seize compound in a SPRAY CAN. I thought that was cool... anyway....
This might be one of those things that you need to order on-line. I think there's a great link in my "DIY: The POLISHING" post from like 6 months ago. Those guys (whoever they are) will probably have it. I re-installed OS X because I got a few new hard drives, and lost all my dang bookmarks. I guess I was in a hurry to get it installed.