There are a ton of photos of this online already, but everyone says they don't look anything like how it looks in person. Go to Pinball Refinery's website, they have a picture.
I was all set to get the Refinery kit, but I backed off because I really didn't want it to be purple. I have some games with purple in the GI and they look cool, but this didn't seem like one where I wanted it. I know it won't look AS purple as the pictures, but people still said it had a purple hue.
At the last minute I opted for the Pinstadium kit. I liked that you could tune the GI colors, and the added flasher effect looked pretty cool. I went with the UV flasher option so I could still get a bit of the Refinery look, but it wasn't what the game looked like all the time. The main downside is there will be a wait on them doing the initial run until more people jump in. But, I heard second hand that Charlie thought the Pinstadium kit looked cool in RZ, so I figured if it aligned with his vision of the game, that was even better.