Yeah I agree...brown means plant is taking green FROM the stem, and using it to help itself under ground....slimy black comes from the ground up, or it freshly cut cuttings...(I just lost two to this, due to abuse of some sort on my part)
..I have plants whcih browned all the way down to ground after transplant, and then last nodes popped green....If initial transplant is "not good" I think a set of roots dies, and it takes a week or two, or three, or four...(who knows?) for a stressed plant to regrow and restart itself......I had some plants which froze on plane flight, it too one month for them to come alive.....(I actually took pictures of the whole drama, they flowered 9 months later....now I can't remember which pot they ended up in...."Bongos Blossers from Japan")
Th is the part where you just have to stick the plant somewhere no too hot, not too bright, and walk away....maybe water it every few weeks or so....it will either pop or not.......
Don't forget, there is alot of things going on underground that we can't see.
http://farm1.static.flickr.com/44/151684529_8ebf68d744_b.jpg