I don't think your guy is going to turn black. I've never heard of a Honduran that does that and he looks like an anery to me. I like that morph and have debated buying one but I have a love for the hypo tangerines:)
My black milk. She hasn't completed her color change yet and you can see the red in her still.
http://i.imgur.com/8Zi1TFw.jpg
http://i.imgur.com/mHX25wI.jpg
And my 50/50 Cali king freshly shed and just started eating again the other week. He is wondering why there isn't a female for him right now:P
http://i.imgur.com/Qblv9zI.jpg
http://i.imgur.com/TdfvtoC.jpg
http://i.imgur.com/Qckk3rQ.jpg