I read this in an artical about the new ford mustang..
"125 different hues for the speedometer and other gauges can be created. This, according to Ford types, speaks to the growing desire of customers to "personalize" their automobiles. How this urge will be met by psychedelic instrument displays has yet to be confirmed."

I think that's kind of a cool idea... of course not something that would cause me to buy a car but I like the thought.