Quoted from pinstadium:That is the one machine I really struggled with for some time, and I even was adding spotlights left and right to it. However the issues I had was that where the spotlights weren't shining it created an even darker contrast in those areas. I do have a B&A of mine with the Pin Stadium kits installed. I also used this on our gallery http://pinstadium.com/gallery/ for an example for our customers.
I like the darker one. I think it looks kind of ridiculous all lit up. Just turn the overhead lighting on. The darkness creates the vibe.