GCs made proposals for the modification of some racist parameters in that constitution. But since you didn't accept them those modifications were not made. All you had/have to do if you don't like a change from the 1960 agreements is to reject them, nobody has their right to impose changes (the same goes for us. This is why we had the right to reject the Annan plan).
Still why would you refuse to even discuss the changes of some of those parameters, e.g. that the 18% of TCs should take the 30% of government jobs. Don't you think that this is racist and unfair, especially in a country that everybody wants to be a government employee?