Nero. According to a BV SA, this was a SS08 collection color, though I bought it during FW08.
The same SA informs me that the material used is
nappa capri, which she likened to having the shine of glove leather. It has a very soft drape, with texture showing in the strips (see 2d photo). In comparison, regular nappa has a tighter grain (smooth) and is more matte (see 3d photo showing torrent nappa in bad lighting--the color looks too yellow, sorry).