@Override
    public void cleanup() {
        initialized = false;
    }
Create a cube with the specified color,
using a custom unshaded material that outputs 4 textures:<ul>
<li>red channel only to location 0,</li>
<li>green channel only to location 1,</li>
<li>blue channel only to location 2,</li>
<li>merged RGB to location 3.</li></ul>

@param color the desired albedo color (alias created)
@return a new Geometry with no parent
jme3-examples/src/main/java/jme3test/post/TestMultiRenderTarget.java