Ever wonder how hot the water is coming out of the faucet before you put your hand in it? I would dare say most of us have. I know that I have gotten a painful surprise more than once when the water was much warmer than I expected. Well Germany faucet manufacture HANSA has done something about it. They now have a line of faucets which use LEDs to cause the water to glow either red or blue to indicate the current temperture of the water. Why didn't I think of that?