How do you "Turn Off" black holes?

[dumbluck]

I know it can be done, I remember there being some mods made that did it. I've been searching, but I can't find the mods, and I can't figure out what to change in the Data files to make my own mod for this.

Any help would be appreciated by more than just myself. I'm wanting to make an ancient map with few black holes for my PBW P&N game. (Lots of nebulas to hide in, few black holes to mess up pathfinding.)

Also, I remember a mod out there that made it so that you couldn't tell a nebula's obscuration by it's color. Again, can't find the mod, can't figure out how to do this one. I kind of hoped to keep this one a secret from my players, but it was not to be. I'd rather have everyone know about it and still have the mod that just settle for the color coded nebulas.

Again, any help would be appreciated.