I have the cointaker kit in mine. No purple... Love it, didn't make any substitutions either. This title looks beautiful with LED's btw. Cool album cover target stickers you got there!

Ramp entrance lights should be hidden too, I've seen guys use G'nR belt buckles over them. I ordered a couple off eBay, going to try it. The axle light gets mounted under the plastic?

You probably did this already but maybe double check that all the pins are aligned and none are bent. I've made this mistake before. Also, sounds dumb but I also put one in the wrong socket (empty one above or below) once. Lastly, may be a bad chip. Do you have another NVRAM to try?