Not sure if this was available on the earlier models but on the 2010 there is ambient lighting feature. With the click of a button in the center console you are able to change the interior lighting color to one of seven choices.
Here is the description from Ford's site.
"Available ambient lighting lets you change your mood at whim. LEDs light up the front and rear footwells, front storage areas and front cupholders. Seven colors to choose from: red, yellow, green, blue, purple, white or aqua.
Standard on Limited and SPORT. Available on SEL."