this verse in revalation is the most commonly misunderstood verses in the bible.
When it says he has feet the color of brass and hair like wool the writer talking about a vision he had of Jesus in his glorified spirit body not a human body."His feet were like bronze that glows hot in a furnace"means that his feet were glowing like a metal thats in fire not that they were the the color of a black person. "His head and hair were like wool as white as snow" this means his head and hair were white in color not that his hair was wooly. Clearly this description of Jesus is not of a human being but of a spirit being.