you mean tiles like this one
http://www.acousticalceilingtiles.com/
You can get Armstrong at Lowes or Home Depot ...
They're white, and I don't know if you can special order them in black ... or you can paint them (see the picture, you can notice on the right side white spots; those are the holes where I din't apply a lot of paint) ... is hard to paint them because of the small holes, but you can try spray gun or some Dye (this is used to paint cloth, I didn't use it because I was using regular paint already
... but I think it will work better because the tile can absorb the dye better than the paint)
