Quoted from The_Dude_Abides:
Hahaa, well quite a few of us are also very excited about the new software controlled color changing LEDs being used in new machines like WOZ & Predator. I say use them to your full advantage without over doing it to draw players into different scenes/modes. As always though to each their own.
I think they have their place, for example Space Station multiball mode turning the playfield green, it was striking because it happened rarely (if my multiball times are anything to go by...), but also because hardly any other machines had a similar ability. I think they could be used under inserts sparingly too in some games, allowing you to colour shot indicators by mode. I'm glad Kevin posted that traditional lighting will be an option - it's little to no extra effort for them during the build. Their approach to customers is so very refreshing compared to the other games in town.
I wish JJP would move on from having all their inserts colour cycling constantly, it just looks a terrible mess. Haven't seen a video for a while, maybe that bit is finished now. My prime complaint against bathing the playfield in coloured GI light more than just occasionally, is that it spoils the artwork. On a lot of the LED modified games you see, you can't even tell what colours the playfield art was supposed to be once they're switched on.
Thing I'm looking forward to most in Predator: Arnie war cry
Thing I'm looking forward to least in Predator: With every machine I buy regardless of manufacturer, I have to remove the head to get it in the house. EMs are the only machines where this isn't a royal PITA.