Well, if there is any difference, I haven't heard of anyone else bringing it up before.
But, if there is, and you really want indiglos, go to a junkyard and pull a cluster out of another post-98 'Tour.
Should run you about $50.
And yes, the Indiglos turn on with your headlights. They look and work exactly the same as cars with white-faced gauges straight from the factory.
Installation is relatively easy. Do a search for "Indiglo" and "How To". You should find one. I know I posted one a couple months ago.
