In my Gen2 I'm running DDM Tuning 35W 5000K HIDs. They are a nice white, none of that blue crap, which I suppose is just personal taste, but I don't like it and wanted white. Easy install. Trying to find the LEDs that I used to match in my city lights. Not sure if your Gen4 has city lights though, but I'll try and post anyway.
EDIT: Part number for the matching LEDs for the city lights on my Gen2: 194LED-5x5050LED.W. Not much help for you, but I think the 5050 is the number that corresponds with the color of the light.
Last edited by evilaugust; 09-05-2017 at 08:09 AM.