I thing you should be focusing on your nitrogen abundance problem, slight leaf coloration isnt out of the ordinary late in flower. But you really cant tell that the dark blue green tint of your plant and leaves curling down is abnornal?.
Like i said in the thread this is my first grow so i still dont know what im doing a whole lot, the dark green was never so bad until this point and the dying leaves made me think flushing was a good idea. correct me if im wrong?