Yes, it is black. Theflash makes it kind of bluish in color, but it's black.
I did mine in about 4 coats. My 29G took 2 cans (One can plus part of a 2nd can to get rid of thin areas where light gets through). I did a lighter color on my 75G, which took 3 cans. When you go to Lowe's, check those testured paints. The cap on the can is the exact color.
There's another one that's called hammered gun metal. I tried it on a 10G tank, and it only looks like hammered gun metal on the back of the tank. But through the glass, it's a solid gun metal color. Looks pretty good actually, but I would have preferred the hammered look.