Hand in hot and cold water

These pictures are thermal images of my right hand in hot water and ice water. First picture is taken while I was putting my hand in hot water and the second picture was taken when I put my hand inside of ice cold water for about 30s seconds. The darker color implies the colder and the brighter color implies the hotter temperature. When my hand was in hot water, the hand turned to white in thermal image. And when my hand was in cold water the hand turn to black whereas my body temperature was still high and showing red and white color in thermal image.