I have stated this before elsewhere and
@Sandvinsd is correct if what my DA and his boss told me holds true. The Harmonization Process has taken longer and has been more difficult than they anticipated. The process can be very complex and can be impacted by various environmental factors as well as curing differences, etc. I can understand that it is a complex process and yes, it does come down to matching paint. It sounds like it should be simple, but it isn’t. That being said, it should not take as long as it has. According to my DA and his boss, it has nothing to do with a bad batch of paint or any type of supply issues. It is all about the Harmony Process.
Red was a late edition to the DE offering so it makes sense it ended up at the tail end of the DE’s. The grey delay is certainly something Lucid is not happy with, but I would have thought it was something they would have figured out by now. Grey has been an option for over a year. One would have thought they might have started working on this a long time ago, especially if they ran into some of the same issues with red, but we really do not know that for sure.
Bottom line, it’s a complicated process. It should not have been a surprise to Lucid. People have been painting cars different colors for decades. I think they took it for granted and thought it wouldn‘t be an issue. I am sure they wish they had started the process earlier, but they did not.