Lighting has changed so much in the last few years. Here are a few pictures of the conference room in my office in which I held the crown down 6" from the ceiling and installed LED tape light behind it. With all the new options, you can go with RGB for color changing depending on mood/atmosphere or even have some that let you change the color temperature (2700k Warm white to 6000k daylight white and everything in between). Any time I do this, I prefer to paint the back of the crown matte white so the color of the wood doesn't affect the reflected light on your ceiling of walls. Good luck!