So I might be the only person that wanted to add backlit LEDs to my keyboard, but in the case that someone else has tried, were you able to get it to work? The LEDS wouldn't turn on for me (one did briefly, then faded almost immediately). I've tried on 2 PCBs (the original I received and the replacement due to the split backspace issue), and neither of them turned the lights on. I tried adjusting the settings with the original files on kbfirmware and the newer files in VIA.
Hopefully I'm not wrong, but I'm ruling out soldering-error since I was able to install LEDs on another keyboard without issue and I tested multiple slots to be sure that the issue is consistent. It's not the end of the world if it won't work, but it would've been nice to have for my personal build.
7/19/20 Update: In case anyone else sees this and wonders if there is an update, I'm just a big dum doodoo head and it works fine.