General Color of Icons on the screen in Car Dock Mode

view story

http://androidforums.com – I often put my Bionic in the Car Dock while driving as I like the Tunein Radio app. Of course when I put it in, it goes to Car Dock mode. Now, I always just press the back button to get to the main home screen, but I have noticed that the large icons on the Car Dock home screen, the Navigation, Voice Search, etc, will sometimes be orange and sometimes be white. Do the different colors mean anything? (General)