Just for fun talk.....
I played with this type of LED strip to build a home light fixture (it has a separate controller with built in presets and a microphone for audio responsiveness, remote, and a 5v converter built in).....
you could protect the lights a bit by installing tracks (cheap on amazon).
You can also get inexpensive controllers meant for use in cars, which would allow you to choose just about any color and change the brightness. For those who are more technically inclined, they work very well with an Arduino (that is, until you want to write the code from a 1v microphone, then it gets kind of ugly).
As far as my vehicle, I think something is wrong with some electronics. When I test drove it (2001 LX), I thought I heard the doors lock when going into gear, and when going into reverse the driver mirror moved down. Now the drivers mirror doesn't move at all (through the switch) and the doors don't auto lock. I had no idea there were 'courtesy' lights. I also don't have a keyfob. Guess I'll have to play with it all. Courtesy lights in the doors, and overhead, all work as expected.