The Rastafarians say that scriptures prophesized him as a person with "the hair of whose head was like wool, whose feet were unto burning brass". This is where the ebony skin colour comes from in Quad's writeup.

Of course, to them, it's very easy to find out what Jesus looked like. Just do a web search for Ras Tafari or Haile Selassie.

References: virtually any page on Rastafarianism on the web. They all seem to be almost verbatim duplicates of eachother.