[C]ar [and bike] thieves stay away from cars in unpopular colours 
because of their relatively low resale value. It argues that driving 
a car in a bright, uncommon colour such as yellow is a highly effective
deterrent against car theft - about as effective as an expensive 
security device.

<http://www.voxeu.org/index.php?q=node/5262>http://www.voxeu.org/index.php?q=node/5262 



"People Who experience mood swings, fear, voices and visions"