They are the authors of The Color of Christ: The Son of God and the Saga of Race in America, just published by the University of North Carolina Press.In a world filled with images of Jesus, this one made headlines. He stood in a stained-glass window wearing a simple white robe and a dark tunic. When sunlight struck the glass just so, kindness radiated from his white face and warmth from his brown eyes. This was a comforting Jesus, and for decades he had been with this black congregation in Birmingham, Ala. But on Sunday morning, September 15, 1963, less than three weeks after Martin Luther King Jr. proclaimed his dream of racial equality, dynamite set by white supremacists exploded outside the 16th Street Baptist Church, and four little girls who had gone...