Texting emotions

Not sure of the tone of a message? Soon, you'll be able to just check the color of your key pad. Nokia is applying for a patent for a system that would allow cell phone users to program a color to glow on the recipient's phone key pad according to the mood the caller/texter wants to convey.

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According to it's patent application,
"Light messaging allows a user to express a mood while having an ongoing call or while sending a text message. The light messaging may set the tone of the communication. People react to lights and colors very deeply and emotionally. Thus, using lights of an electronic device for light messaging allows enriched and improved user experiences with a new level of communication"

What do you think of this? Do you think people will "get it"?