What the title says. After installing this mapping.plist you can choose between the bright one and the modification, which is not that bright.
Download and unzip this: https://copy.com/HcmXwe1kTSRBjyeV
Watch this for how to install it (and how to make a back-up first): https://copy.com/QMCczDMILKqWxDrX (Download it and open it in your browser. Don’t mind the last ten seconds, I forgot what I was about to do, haha.)
Here is how it looks like compared to the default bright one, and how to turn it off and on again: https://copy.com/BJvbyKI07D3Qzega
(Ps. My Copy.com referral link: https://logicxinterfaces.wordpress.com/2013/12/18/a-small-favor-if-you-wish-and-15-5-gb-free-cloud-storage-for-you/ )