The police department has recently switched its squad car image (August 2003) to the black and white colors.  There have been a change in graphics and the light bars have even undergone some minor changes.  The older (or overall white) vehicles will be replaced with the black and white versions as the cars need to be changed out over the years.  Lt. John Mueller is in charge of handling the vehicle operations and came up with the idea for switching the vehicles to the black and white version.