Blue cold water?

Today I found an interesting faucet while surfing on the internet: a faucet with water which changes color depending on its temperature.

Cool, isn't it??

An internal turbine makes the water "go" red when it reaches 32ºC. Actually, LED  lights are the responsible  for the colored water.



So you realize... if you had one of these in your house you would not freeze anymore while waiting the water to become warm! Also... you may not have to turn on the lights while taking a shower anymore [although I don't know if it is really useful].