But you wouldn't be seeing the outline of the hole itself, anyway. Black hole, the thing's pretty damn small- not quite pinhead most times, but close. Still, the AREA around a black hole's very dark, 'cos all the light gets absorbed from a very long distance away, there's such force. Matter, even farther. But, theoretically at least, since certain wavelengths of light are, basically, faster than others, they'd have enough escape velocity to avoid the black hole and only get bent around it at different points. If someone shone a really big, bright light behind a black hole, on the other side you'd probably see something like a damn strange rainbow. Since there's not generally a noticeable amount of light in deep space, however, you really wouldn't see anything.