Carolly, I do not want to mention what I am capable of. I have developed AI with hi-speed video cameras to identify and measure things even bolts or count clutters for industrial use. All light that refected from object is based on the tempature of chemcials. Color is still part of tempature light. Some cameras are capable to capture body heat. Some heat send out infra light and some cameras can capture it. So my point is that anything that heat CREATES light. The shadow is supposed to decrease color tempature.