HANSA International's Hansacanyon Faucet has LEDs that light up with different colors based upon the temperature of the water passing through it. Blue is for cold water, violet for lukewarm and red for hot.Link -via Dorn...http://www.neatorama.com/2012/10/05/Faucet-Changes-Color-with-the-Water-Temperature/
Faucet Changes Color with the Water Temperature...
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