I ended up waiting long enough and a very kind soul took the time to guide me through the process. It's been a while now but I can across it with an alt I leveled as well. This alt was much higher level when he did the quest and just one-shotted the baddies while I tried the various combinations.

And I've been told "it's the positions the holograms are in!" Only problem is the red/green one(s) are difficult for me to look at. I mean, I literally have difficulty clearly seeing the exact shape/position they are in. That may be a different issue altogether (i.e. just not noticing, etc). I did screen shots as well, but in the end, it was more straight forward just to hit the various things until I got it right.

I did find a YouTube video that helped, but the video did not CLEARLY show (to me, at least) WHICH brazier he started with.

Anywho - 2 years on and still no colour-blind mode. I love the game but it saddens me that there are a few quests that 100% require proper colour recognition to successfully complete.