Try other colors- say, blue and red.
I think that the black painter might be designated as a paint remover- rubber-coated cables are black after all. There might also be some other bugs surrounding this mechanic and glass fiber cables.
@Mystcraft problems a few pages ago: The Standard Terrain, Void, End World, Cave World, or Flat Terrain pages are required- if you don't specify one, you'll get something random, which explains the problems with winding up with void ages. If you specify this symbol properly, not specifying, say, Sunset Color should never give you a world type that you didn't want.
These pages (certainly Standard and Flat, probably End and Cave, not sure about Void) also take a block modifier as well as a biome- [Hell Biome] [Netherrack] [Cave World] should give you an age that looks a lot like the Nether; more importantly, [Stone] [Ocean Biome] [Standard Terrain] should give you a very normal-looking ocean. It might even generate with sand and dirt under the water, and grass on the islands, but I'm not sure.