Warm and Cool Charger

I'm pretty sure most people have seen this light. I was thinking about the colors Apple decided to use. I don't know why they chose them, but they make sense to me. When the laptop is charging, there is a warm orange light. I think The warm orange light was used to show that there is work in progress. Warm colors show that things are lively and happy (The charger is even warm when the warm orange color is present). When the charging process is done, there is a cool green light. I believe the cool green light was chosen to show that there is peace and rest. The computer doesn't need any more charge, so the charger can relax and not work as much (Again, the charger is cooled down when the cool green light is present). If these are close to the reason why they chose those colors, then the designer knew what they were doing. I'm pretty happy to have an understanding of colors now.