Benzelsanswered grow question 4y ago Well your humidity issues are just as a big an issue as the leaf color!! I saw the convo and even 60% humidy during flower is a massive prob. So it doesnt matter if you fix the leaf color prob if all the buds are rotten from grey mould (bud rot). Also during flower plants need less humidity so they transpire more (the amount of water that the plant takes in is equal to the amount of water that evaporates from the plant) In dry air the plant "sweats" more and takes in more water (and more nutes along with it)
This is your issue. You had too high humidity from the start (70% in veg is way too high) and this meant your plant didnt transpire effectively so it didnt take up the nutes in the soil/water very effectively either. You can dump all the nutes on it you like but until you fix the humidity issue, the plant wont be able to even drink up the nutes. And now your so close to harvest the damage has been done, But you can save whats left from bud rot and at least perk her up a bit if you get the humidity below 50 %. It takes 4 days to a week minimum to see a change from nutes but even longer in high humidity, so based on your info- the nutes you added last week are hardly being taken in by the plant.
Hope that helps.