Laser used to make metals change color

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Aluminum that looks like gold?  How about Titanium that looks blue?  They say with image enough time, they should be able to make metals any color.  The process involved using very small pulses of light to vaporize a few atoms off the surface.  It won’t be long before jewelry will take this new twist into production.  http://www.nytimes.com/2008/01/31/science/31metal.html?_r=3&ref=science&oref=slogin&oref=slogin

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