Yes I read the original thread earlier. Did you use flash on this shot?
I took a shot of a blank wall (almost white) without flash and natural light from a window... no "green" spots. I took another of the same area with the flash and there is a green circular hue. The sensor appears to be recording more of the green content and the circular pattern appears to be the flash coverage circle.
Looking at the images in this thread, there appears to be very little if any of what you posted. A blank wall or sheet of paper will reveal more of these kinds of problems. The engineers may adjust some of the settings for the sensor to create a more balanced image but I really do not see some major fault with the ability to record very satifactory images from a cell phone camera.