LED Shower Light
The Shower Light is a temperature controlled faucet light that turns neon blue to fire red. Blue let's you know the water is chilly. When the water warms up to 89° F (32° C), the light changes to red. The LED Shower Light is easy to install and fits most shower heads. Water flow generates the light stream. Definitely makes shower time a bit more interesting.
so cool! the light changes from blue to red when the water heats up. it's like having a disco in your shower.
I've seen these on the internet, but never took the time to read what it actually it is. Don't get caught thinking what I did and that it was just some stupid was to change the "color" of you water. Actually, it tells you when your water is hot.