Color-changing Lids 
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A color changing disposable coffee lid from Smart Lid Systems has been awarded a prestigious Dupont® Packaging Award. The color changes from dark brown to bright red when placed on a hot beverage. This alerts a consumer that a beverage may be too hot. It’s also reversible (from red to brown) signaling that a beverage is cooling down. Source
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Color-changing Margarita Glasses

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Here’s another “chameleonic” drinking gadget. The color changing margarita glass that can be lit up in 1 of 8 colors. Simply flick a switch at the base of the glass to change the color (or turn the glass off). Pointless? Cool? Source |
Color-changing LED Faucet

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This faucet changes color based on the temperature. Similar to the color-changing lids, it alerts the user to the temperature of the water so that you won't scorch your hands. If it's red, don't mess with it. Source
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Color-changing LED Balls

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A glowing LED ball that changes color depending on ambient sound is a fun accessory from Japan. The "balloon" light comes in two sizes: the 8-inch and 12-inch diameter. It makes you wonder what would happen when you're listening to Metallica or Hendrix. Source |
Color-changing Clothes

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Can you imagine your dress changing color according to the time of a day or mood? Scientists have developed advanced new fibers that can change color with a flip of a switch. Next-generation threads may one day be used to make clothing that suits the wearer's mood or to allow a person to blend in with the environment.
The concept is similar to the way light-sensitive eyeglass lenses darken when exposed to sunlight. The threads, created from materials known as electrochromic polymers, change color in response to an electric current. Source |
Chameleon Scarf

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Japanese researchers from Keio University have made a chameleon scarf that changes color according with what you wear. Put on a green jacket, and the scarf will turn green. Add a blue coat, and it will glow blue. If the wearer prefers to make a more creative fashion statement, the scarf's computer can be configured to match more unusual colors. This chameleon scarf incorporates optical fibers and light-emitting diodes (LEDs) able to render more than 4,000 colors. Source |
Color Changing Eyeglasses

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Change the color of the lenses to match your outfit or your personality. The key to this technology is an electrochromic polymer that has the ability to change levels of darkness and color in the presence of an electric current. By pushing a button on the frame, the glasses turn red, green, blue or virtually any color. Source |
Mood-Sensing Cell Phone

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The "Mood Phone,'' designed by Duke University student John Finan…. lights up in a spectrum of color - from warm reds to cool blues - based on the verbal patterns of everyday speech received through the handset. Seen through the corner of the eye, the visual stimulus would help users interpret the mood and inflection communicated through the words and phrases they hear.
Although it was designed to improve social interactions, especially for tens of thousands of people who suffer from a mild form of autism, it may soon help interpret the tones and mood of every day life.
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Color-changing, Mood-sensing Speaker

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MobiNote is releasing an egg-shaped speaker set that changes colors based on what kind of music you play. The egg detects the different rhythms found in your favorite song, and changes its color accordingly. There are ten different tones that the Hipper 100 is capable of, providing a nice range of mood lighting. Source |
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