Gauss and Golf are no problem once the black dial is made. I don't see nothing special in yellow and green color that is hard to replicate. Even if the tone is not 100% exact, I don't think a lot would care.
Blue is the one that is hardest to replicate. And that would be Captain's and Skyfall.
I can't wait to get my Captain's, I am really interested if they captured the blue right.
Watch is now on the way from GB to Slovenia, should be here until Wednesday, 23rd.
And even manufacturers of gen watches have hard time finding that right blue tone that would satisfy most customers (read that for Oris Aquis Blue).
Blue is my favourite color by far anyway, but things like these make it even more appealing to me.