CS5, Photoshop. I want to replace a short portion of the top of a black turtleneck sweater with the adjacent skin color. In other words, lower the height of the turtleneck on the neck. Skin color is very light white. I have tried th patch tool, but it does not change the balck to the white skin color. It just lightens the black slightly. Any ideas on how to replace the balck with the light white?