I also have a Class 1 with that annoying 4 letter NCAT stamped on it! It's frustrating to say the least.
I've been considering on asking a friend of mine who has studied law and is now practising at solicitors firm to draft me up a letter. It wouldn't be a, "I'll see you in court" letter but instead just one asking for concrete evidence on why colour deficiency plays such a negative role in getting a night rating. I'd also put on the letter that I'd be willing to sit in an approved CAA flight simulator and prove that there's absolutely no problem in distinguishing lights both inside and outside the flight deck during the hours of darkness.
I want to expand on my PPL and ICAO need to understand that CVD pilots in no way jeopardise the safety of commercial flight.