Right. They are actually full of light and color. We just can’t see the light because the gravity won’t let it escape.
When and if a black hole acquires enough mass, it can make a really Big Bang.
If we could indeed watch something go into a ‘Black Hole’ from our direction, wouldn’t it get so close, then appear to just ‘freeze’ in place, because after getting so close we would no longer see any changes of the object?
I’m probably not explaining myself very well, but you may get what I’m saying. The whole concept is fascinating and difficult for me to wrap my often feeble mind around. lol