You need dealer software to turn off "dark mode" on 2006 and newer Crown Victorias, look about half way down on this page.
http://www.idmsvcs.com/2vmod/fordids/screenshots/index.html At most dealers they should charge you a hook up fee, a standard $100, for the service but some people have gotten a reduced rate or free simple services like that by just talking to the people in the service department.
That is just one page from a site created by Matt aka 2vmodular on CrownVic.net with some great information on the Panther platform cars, the site has been hosted by another member of the site since his passing here unchanged from its original form
For me, I love the dark mode. If I want to turn on the dome light I do, but if not, it is nice to just get out late at night without the whole world seeing you...