I saw a few weeks ago that someone made light up flipper buttons for their White Water machine and I thought it was a pretty cool idea so I made a pair for Spider-Man. When the game isn't being played the left is red and the right is blue to match the game. But when the game starts they change colors and flash to go with the game. And a bonus, I put a flasher in the coin door too!
Here's a video link:
I know it's way over the top but I like it, let me know if you do too!
Brandon