Hello, I'm not sure if this is the right place as it's not quite a technical question, but I hope you guys can help me. I have a question about a certain situation involving reflection of light and how it effects color, and it requires somewhat of an 'artistic' eye. I had a little debate about it with some friends: Let's say we're looking at a still lake at midday, and we have a ball floating in it. Whatever it's local, actual color is, it's upper part exposed to the sun will obviously be warmer in color. But what about the reflected light in the shadow area? Is it cooler because of the blue sky (as a secondary light source) bouncing back from the water to the ball, or will it be warm because the main light source (the sun rays) is reflected? If it were just a ball sitting on blue ground the answer would of course be the former - the blue is reflected on it from the ground. So I guess another way to put it is to ask whether the water acting as a mirror and not having an actual color would change things or not? Thanks.