Better Ideas From China: Color-Coded Shower Head Lights

"Illuminated Shower Heads"

The shower head lights shine with different colors, depending on temperature:

Under 32°C		White
33°C to 41°C		blue and dark blue
42°C to 45°C		pink and violet
Over 45°C		hot red

Having a sort of light show while you shower is a cool idea. That "hot red" light might be a good safety feature, too. 45°C is 113°F. Somewhere over that, you get into a range where scalds are possible, at least according the American Burn Association (pdf-format campaign kit).

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