Quoted from markmon:
But if you take any game stock and turn out the lights, you just cannot see the flipper area well.
On many games that's true, but not all. For example, AC/DC is plenty bright right out of the box. I play mine in the dark all the time.
As for WOZ, I agree that the stock GI lighting is woefully inadequate. Even if they allow you to turn the intensity way up, I just don't see there being enough light to play in a dark room. Kudos to you for addressing the issue and taking the time to explain exactly what you did to the community. Based on your photos, I think the game looks great now. The only negative, as others have already pointed out, is that it's not tied into the existing GI. Thus, your added lights will always remain on. This will definitely take a lot of the fun out of "Lights Out" multiball.